Home / 530,184.76-731,649.28-315,320.10

Finding the Fourth Proportional to 530,184.76, 731,649.28 and 315,320.10

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Solution

The fourth proportional to 530,184.76, 731,649.28 and 315,320.10 is: 435,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,184.76 : 731,649.28 = 315,320.10 : x
  2. Step 2: Convert to fraction form
    530,184.76/731,649.28 = 315,320.10/x
  3. Step 3: Cross multiply
    530,184.76x = 731,649.28 × 315,320.10
  4. Step 4: Simplify right side
    530,184.76x = 230,703,724,134.53
  5. Step 5: Solve for x
    x = 230,703,724,134.53/530,184.76
  6. Step 6: Final answer
    x = 435,138.35

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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.