Home / 530,240.28-731,489.85-315,258.18

Finding the Fourth Proportional to 530,240.28, 731,489.85 and 315,258.18

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Solution

The fourth proportional to 530,240.28, 731,489.85 and 315,258.18 is: 434,912.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,240.28 : 731,489.85 = 315,258.18 : x
  2. Step 2: Convert to fraction form
    530,240.28/731,489.85 = 315,258.18/x
  3. Step 3: Cross multiply
    530,240.28x = 731,489.85 × 315,258.18
  4. Step 4: Simplify right side
    530,240.28x = 230,608,158,799.47
  5. Step 5: Solve for x
    x = 230,608,158,799.47/530,240.28
  6. Step 6: Final answer
    x = 434,912.56

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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.