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Finding the Fourth Proportional to 487,655.10, 731,446.20 and 203,272.20

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Solution

The fourth proportional to 487,655.10, 731,446.20 and 203,272.20 is: 304,893.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,655.10 : 731,446.20 = 203,272.20 : x
  2. Step 2: Convert to fraction form
    487,655.10/731,446.20 = 203,272.20/x
  3. Step 3: Cross multiply
    487,655.10x = 731,446.20 × 203,272.20
  4. Step 4: Simplify right side
    487,655.10x = 148,682,678,255.64
  5. Step 5: Solve for x
    x = 148,682,678,255.64/487,655.10
  6. Step 6: Final answer
    x = 304,893.11

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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.