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Finding the Fourth Proportional to 258,240.30, 356,248.68 and 172,239

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Solution

The fourth proportional to 258,240.30, 356,248.68 and 172,239 is: 237,607.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,240.30 : 356,248.68 = 172,239 : x
  2. Step 2: Convert to fraction form
    258,240.30/356,248.68 = 172,239/x
  3. Step 3: Cross multiply
    258,240.30x = 356,248.68 × 172,239
  4. Step 4: Simplify right side
    258,240.30x = 61,359,916,394.52
  5. Step 5: Solve for x
    x = 61,359,916,394.52/258,240.30
  6. Step 6: Final answer
    x = 237,607.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.