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Finding the Fourth Proportional to 485,354.28, 728,031.43 and 148,394.94

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Solution

The fourth proportional to 485,354.28, 728,031.43 and 148,394.94 is: 222,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,354.28 : 728,031.43 = 148,394.94 : x
  2. Step 2: Convert to fraction form
    485,354.28/728,031.43 = 148,394.94/x
  3. Step 3: Cross multiply
    485,354.28x = 728,031.43 × 148,394.94
  4. Step 4: Simplify right side
    485,354.28x = 108,036,176,241.53
  5. Step 5: Solve for x
    x = 108,036,176,241.53/485,354.28
  6. Step 6: Final answer
    x = 222,592.40

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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.