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Finding the Fourth Proportional to 498,315.20, 747,472.80 and 143,308.40

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Solution

The fourth proportional to 498,315.20, 747,472.80 and 143,308.40 is: 214,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,315.20 : 747,472.80 = 143,308.40 : x
  2. Step 2: Convert to fraction form
    498,315.20/747,472.80 = 143,308.40/x
  3. Step 3: Cross multiply
    498,315.20x = 747,472.80 × 143,308.40
  4. Step 4: Simplify right side
    498,315.20x = 107,119,131,011.52
  5. Step 5: Solve for x
    x = 107,119,131,011.52/498,315.20
  6. Step 6: Final answer
    x = 214,962.60

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Similar ratio
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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.