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Finding the Fourth Proportional to 571,691.60, 857,260.44 and 172,257.92

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Solution

The fourth proportional to 571,691.60, 857,260.44 and 172,257.92 is: 258,303.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,691.60 : 857,260.44 = 172,257.92 : x
  2. Step 2: Convert to fraction form
    571,691.60/857,260.44 = 172,257.92/x
  3. Step 3: Cross multiply
    571,691.60x = 857,260.44 × 172,257.92
  4. Step 4: Simplify right side
    571,691.60x = 147,669,900,292.69
  5. Step 5: Solve for x
    x = 147,669,900,292.69/571,691.60
  6. Step 6: Final answer
    x = 258,303.43

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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.