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Finding the Fourth Proportional to 485,847.48, 728,877.85 and 148,913.47

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Solution

The fourth proportional to 485,847.48, 728,877.85 and 148,913.47 is: 223,402.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,847.48 : 728,877.85 = 148,913.47 : x
  2. Step 2: Convert to fraction form
    485,847.48/728,877.85 = 148,913.47/x
  3. Step 3: Cross multiply
    485,847.48x = 728,877.85 × 148,913.47
  4. Step 4: Simplify right side
    485,847.48x = 108,539,727,655.16
  5. Step 5: Solve for x
    x = 108,539,727,655.16/485,847.48
  6. Step 6: Final answer
    x = 223,402.88

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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.