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Finding the Fourth Proportional to 258,634.31, 387,951.67 and 123,666.62

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Solution

The fourth proportional to 258,634.31, 387,951.67 and 123,666.62 is: 185,500.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,634.31 : 387,951.67 = 123,666.62 : x
  2. Step 2: Convert to fraction form
    258,634.31/387,951.67 = 123,666.62/x
  3. Step 3: Cross multiply
    258,634.31x = 387,951.67 × 123,666.62
  4. Step 4: Simplify right side
    258,634.31x = 47,976,671,330.97
  5. Step 5: Solve for x
    x = 47,976,671,330.97/258,634.31
  6. Step 6: Final answer
    x = 185,500.03

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1.5x scale

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.