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Finding the Fourth Proportional to 485,501.78, 728,340.17 and 148,536.11

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Solution

The fourth proportional to 485,501.78, 728,340.17 and 148,536.11 is: 222,830.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,501.78 : 728,340.17 = 148,536.11 : x
  2. Step 2: Convert to fraction form
    485,501.78/728,340.17 = 148,536.11/x
  3. Step 3: Cross multiply
    485,501.78x = 728,340.17 × 148,536.11
  4. Step 4: Simplify right side
    485,501.78x = 108,184,815,608.54
  5. Step 5: Solve for x
    x = 108,184,815,608.54/485,501.78
  6. Step 6: Final answer
    x = 222,830.94

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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.