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Finding the Fourth Proportional to 238,955.52, 358,341.12 and 81,146.88

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Solution

The fourth proportional to 238,955.52, 358,341.12 and 81,146.88 is: 121,689.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,955.52 : 358,341.12 = 81,146.88 : x
  2. Step 2: Convert to fraction form
    238,955.52/358,341.12 = 81,146.88/x
  3. Step 3: Cross multiply
    238,955.52x = 358,341.12 × 81,146.88
  4. Step 4: Simplify right side
    238,955.52x = 29,078,263,863.71
  5. Step 5: Solve for x
    x = 29,078,263,863.71/238,955.52
  6. Step 6: Final answer
    x = 121,689.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.