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Finding the Fourth Proportional to 238,313.97, 328,871.91 and 129,417.24

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Solution

The fourth proportional to 238,313.97, 328,871.91 and 129,417.24 is: 178,595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,313.97 : 328,871.91 = 129,417.24 : x
  2. Step 2: Convert to fraction form
    238,313.97/328,871.91 = 129,417.24/x
  3. Step 3: Cross multiply
    238,313.97x = 328,871.91 × 129,417.24
  4. Step 4: Simplify right side
    238,313.97x = 42,561,694,905.73
  5. Step 5: Solve for x
    x = 42,561,694,905.73/238,313.97
  6. Step 6: Final answer
    x = 178,595.05

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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.