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Finding the Fourth Proportional to 578,138.80, 867,208.20 and 365,562.40

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Solution

The fourth proportional to 578,138.80, 867,208.20 and 365,562.40 is: 548,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,138.80 : 867,208.20 = 365,562.40 : x
  2. Step 2: Convert to fraction form
    578,138.80/867,208.20 = 365,562.40/x
  3. Step 3: Cross multiply
    578,138.80x = 867,208.20 × 365,562.40
  4. Step 4: Simplify right side
    578,138.80x = 317,018,710,891.68
  5. Step 5: Solve for x
    x = 317,018,710,891.68/578,138.80
  6. Step 6: Final answer
    x = 548,343.60

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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.