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Finding the Fourth Proportional to 238,170.68, 328,674.72 and 129,275.04

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Solution

The fourth proportional to 238,170.68, 328,674.72 and 129,275.04 is: 178,399.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,170.68 : 328,674.72 = 129,275.04 : x
  2. Step 2: Convert to fraction form
    238,170.68/328,674.72 = 129,275.04/x
  3. Step 3: Cross multiply
    238,170.68x = 328,674.72 × 129,275.04
  4. Step 4: Simplify right side
    238,170.68x = 42,489,437,574.99
  5. Step 5: Solve for x
    x = 42,489,437,574.99/238,170.68
  6. Step 6: Final answer
    x = 178,399.11

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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.