Home / 578,077.40-867,116.10-204,138.20

Finding the Fourth Proportional to 578,077.40, 867,116.10 and 204,138.20

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Solution

The fourth proportional to 578,077.40, 867,116.10 and 204,138.20 is: 306,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,077.40 : 867,116.10 = 204,138.20 : x
  2. Step 2: Convert to fraction form
    578,077.40/867,116.10 = 204,138.20/x
  3. Step 3: Cross multiply
    578,077.40x = 867,116.10 × 204,138.20
  4. Step 4: Simplify right side
    578,077.40x = 177,011,519,845.02
  5. Step 5: Solve for x
    x = 177,011,519,845.02/578,077.40
  6. Step 6: Final answer
    x = 306,207.30

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.