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Finding the Fourth Proportional to 485,529.60, 728,513.10 and 232,712.40

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Solution

The fourth proportional to 485,529.60, 728,513.10 and 232,712.40 is: 349,173.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,529.60 : 728,513.10 = 232,712.40 : x
  2. Step 2: Convert to fraction form
    485,529.60/728,513.10 = 232,712.40/x
  3. Step 3: Cross multiply
    485,529.60x = 728,513.10 × 232,712.40
  4. Step 4: Simplify right side
    485,529.60x = 169,534,031,932.44
  5. Step 5: Solve for x
    x = 169,534,031,932.44/485,529.60
  6. Step 6: Final answer
    x = 349,173.42

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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.