Home / 238,868.11-329,628.10-129,972.90

Finding the Fourth Proportional to 238,868.11, 329,628.10 and 129,972.90

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Solution

The fourth proportional to 238,868.11, 329,628.10 and 129,972.90 is: 179,357.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,868.11 : 329,628.10 = 129,972.90 : x
  2. Step 2: Convert to fraction form
    238,868.11/329,628.10 = 129,972.90/x
  3. Step 3: Cross multiply
    238,868.11x = 329,628.10 × 129,972.90
  4. Step 4: Simplify right side
    238,868.11x = 42,842,721,233.36
  5. Step 5: Solve for x
    x = 42,842,721,233.36/238,868.11
  6. Step 6: Final answer
    x = 179,357.22

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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.