Home / 487,363.40-731,045.10-132,421.40

Finding the Fourth Proportional to 487,363.40, 731,045.10 and 132,421.40

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Solution

The fourth proportional to 487,363.40, 731,045.10 and 132,421.40 is: 198,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,363.40 : 731,045.10 = 132,421.40 : x
  2. Step 2: Convert to fraction form
    487,363.40/731,045.10 = 132,421.40/x
  3. Step 3: Cross multiply
    487,363.40x = 731,045.10 × 132,421.40
  4. Step 4: Simplify right side
    487,363.40x = 96,806,015,605.14
  5. Step 5: Solve for x
    x = 96,806,015,605.14/487,363.40
  6. Step 6: Final answer
    x = 198,632.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.