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Finding the Fourth Proportional to 238,423.50, 329,068.17 and 137,821.50

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Solution

The fourth proportional to 238,423.50, 329,068.17 and 137,821.50 is: 190,218.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,423.50 : 329,068.17 = 137,821.50 : x
  2. Step 2: Convert to fraction form
    238,423.50/329,068.17 = 137,821.50/x
  3. Step 3: Cross multiply
    238,423.50x = 329,068.17 × 137,821.50
  4. Step 4: Simplify right side
    238,423.50x = 45,352,668,791.66
  5. Step 5: Solve for x
    x = 45,352,668,791.66/238,423.50
  6. Step 6: Final answer
    x = 190,218.95

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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.