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Finding the Fourth Proportional to 530,182.76, 731,646.52 and 315,318.10

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Solution

The fourth proportional to 530,182.76, 731,646.52 and 315,318.10 is: 435,135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,182.76 : 731,646.52 = 315,318.10 : x
  2. Step 2: Convert to fraction form
    530,182.76/731,646.52 = 315,318.10/x
  3. Step 3: Cross multiply
    530,182.76x = 731,646.52 × 315,318.10
  4. Step 4: Simplify right side
    530,182.76x = 230,701,390,558.01
  5. Step 5: Solve for x
    x = 230,701,390,558.01/530,182.76
  6. Step 6: Final answer
    x = 435,135.59

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1.5x scale

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.