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Finding the Fourth Proportional to 579,563.10, 869,344.65 and 158,838.30

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Solution

The fourth proportional to 579,563.10, 869,344.65 and 158,838.30 is: 238,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,563.10 : 869,344.65 = 158,838.30 : x
  2. Step 2: Convert to fraction form
    579,563.10/869,344.65 = 158,838.30/x
  3. Step 3: Cross multiply
    579,563.10x = 869,344.65 × 158,838.30
  4. Step 4: Simplify right side
    579,563.10x = 138,085,226,320.10
  5. Step 5: Solve for x
    x = 138,085,226,320.10/579,563.10
  6. Step 6: Final answer
    x = 238,257.45

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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.