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Finding the Fourth Proportional to 485,556.27, 728,421.88 and 148,590.87

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Solution

The fourth proportional to 485,556.27, 728,421.88 and 148,590.87 is: 222,913.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,556.27 : 728,421.88 = 148,590.87 : x
  2. Step 2: Convert to fraction form
    485,556.27/728,421.88 = 148,590.87/x
  3. Step 3: Cross multiply
    485,556.27x = 728,421.88 × 148,590.87
  4. Step 4: Simplify right side
    485,556.27x = 108,236,840,876.24
  5. Step 5: Solve for x
    x = 108,236,840,876.24/485,556.27
  6. Step 6: Final answer
    x = 222,913.07

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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.