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Finding the Fourth Proportional to 571,689.60, 857,257.44 and 172,255.92

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Solution

The fourth proportional to 571,689.60, 857,257.44 and 172,255.92 is: 258,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,689.60 : 857,257.44 = 172,255.92 : x
  2. Step 2: Convert to fraction form
    571,689.60/857,257.44 = 172,255.92/x
  3. Step 3: Cross multiply
    571,689.60x = 857,257.44 × 172,255.92
  4. Step 4: Simplify right side
    571,689.60x = 147,667,669,004.05
  5. Step 5: Solve for x
    x = 147,667,669,004.05/571,689.60
  6. Step 6: Final answer
    x = 258,300.43

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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.