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Finding the Fourth Proportional to 238,068.91, 328,540.11 and 130,638

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Solution

The fourth proportional to 238,068.91, 328,540.11 and 130,638 is: 180,283.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,068.91 : 328,540.11 = 130,638 : x
  2. Step 2: Convert to fraction form
    238,068.91/328,540.11 = 130,638/x
  3. Step 3: Cross multiply
    238,068.91x = 328,540.11 × 130,638
  4. Step 4: Simplify right side
    238,068.91x = 42,919,822,890.18
  5. Step 5: Solve for x
    x = 42,919,822,890.18/238,068.91
  6. Step 6: Final answer
    x = 180,283.19

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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.