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Finding the Fourth Proportional to 530,037.52, 731,641.68 and 315,176.88

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Solution

The fourth proportional to 530,037.52, 731,641.68 and 315,176.88 is: 435,057.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,037.52 : 731,641.68 = 315,176.88 : x
  2. Step 2: Convert to fraction form
    530,037.52/731,641.68 = 315,176.88/x
  3. Step 3: Cross multiply
    530,037.52x = 731,641.68 × 315,176.88
  4. Step 4: Simplify right side
    530,037.52x = 230,596,541,980.36
  5. Step 5: Solve for x
    x = 230,596,541,980.36/530,037.52
  6. Step 6: Final answer
    x = 435,057.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.