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Finding the Fourth Proportional to 485,853.81, 728,781.96 and 249,067.32

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Solution

The fourth proportional to 485,853.81, 728,781.96 and 249,067.32 is: 373,601.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,853.81 : 728,781.96 = 249,067.32 : x
  2. Step 2: Convert to fraction form
    485,853.81/728,781.96 = 249,067.32/x
  3. Step 3: Cross multiply
    485,853.81x = 728,781.96 × 249,067.32
  4. Step 4: Simplify right side
    485,853.81x = 181,515,769,641.55
  5. Step 5: Solve for x
    x = 181,515,769,641.55/485,853.81
  6. Step 6: Final answer
    x = 373,601.62

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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.