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Finding the Fourth Proportional to 485,781.12, 728,554.08 and 249,001.92

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Solution

The fourth proportional to 485,781.12, 728,554.08 and 249,001.92 is: 373,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,781.12 : 728,554.08 = 249,001.92 : x
  2. Step 2: Convert to fraction form
    485,781.12/728,554.08 = 249,001.92/x
  3. Step 3: Cross multiply
    485,781.12x = 728,554.08 × 249,001.92
  4. Step 4: Simplify right side
    485,781.12x = 181,411,364,743.83
  5. Step 5: Solve for x
    x = 181,411,364,743.83/485,781.12
  6. Step 6: Final answer
    x = 373,442.60

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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.