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Finding the Fourth Proportional to 485,769,892.64, 728,654,252.52 and 158,244,871.46

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Solution

The fourth proportional to 485,769,892.64, 728,654,252.52 and 158,244,871.46 is: 237,367,116.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,769,892.64 : 728,654,252.52 = 158,244,871.46 : x
  2. Step 2: Convert to fraction form
    485,769,892.64/728,654,252.52 = 158,244,871.46/x
  3. Step 3: Cross multiply
    485,769,892.64x = 728,654,252.52 × 158,244,871.46
  4. Step 4: Simplify right side
    485,769,892.64x = 115,305,798,528,809,792
  5. Step 5: Solve for x
    x = 115,305,798,528,809,792/485,769,892.64
  6. Step 6: Final answer
    x = 237,367,116.15

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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.