Home / 530,171.31-731,630.74-315,306.66

Finding the Fourth Proportional to 530,171.31, 731,630.74 and 315,306.66

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Solution

The fourth proportional to 530,171.31, 731,630.74 and 315,306.66 is: 435,119.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,171.31 : 731,630.74 = 315,306.66 : x
  2. Step 2: Convert to fraction form
    530,171.31/731,630.74 = 315,306.66/x
  3. Step 3: Cross multiply
    530,171.31x = 731,630.74 × 315,306.66
  4. Step 4: Simplify right side
    530,171.31x = 230,688,044,982.73
  5. Step 5: Solve for x
    x = 230,688,044,982.73/530,171.31
  6. Step 6: Final answer
    x = 435,119.82

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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.