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Finding the Fourth Proportional to 238,065.61, 328,530.07 and 129,169.91

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Solution

The fourth proportional to 238,065.61, 328,530.07 and 129,169.91 is: 178,254.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,065.61 : 328,530.07 = 129,169.91 : x
  2. Step 2: Convert to fraction form
    238,065.61/328,530.07 = 129,169.91/x
  3. Step 3: Cross multiply
    238,065.61x = 328,530.07 × 129,169.91
  4. Step 4: Simplify right side
    238,065.61x = 42,436,198,527.35
  5. Step 5: Solve for x
    x = 42,436,198,527.35/238,065.61
  6. Step 6: Final answer
    x = 178,254.22

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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.