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Finding the Fourth Proportional to 488,363.52, 731,301.12 and 321,646.08

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Solution

The fourth proportional to 488,363.52, 731,301.12 and 321,646.08 is: 481,649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,363.52 : 731,301.12 = 321,646.08 : x
  2. Step 2: Convert to fraction form
    488,363.52/731,301.12 = 321,646.08/x
  3. Step 3: Cross multiply
    488,363.52x = 731,301.12 × 321,646.08
  4. Step 4: Simplify right side
    488,363.52x = 235,220,138,547.61
  5. Step 5: Solve for x
    x = 235,220,138,547.61/488,363.52
  6. Step 6: Final answer
    x = 481,649.69

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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.