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Finding the Fourth Proportional to 238,903.32, 358,406.84 and 72,687

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Solution

The fourth proportional to 238,903.32, 358,406.84 and 72,687 is: 109,046.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,903.32 : 358,406.84 = 72,687 : x
  2. Step 2: Convert to fraction form
    238,903.32/358,406.84 = 72,687/x
  3. Step 3: Cross multiply
    238,903.32x = 358,406.84 × 72,687
  4. Step 4: Simplify right side
    238,903.32x = 26,051,517,979.08
  5. Step 5: Solve for x
    x = 26,051,517,979.08/238,903.32
  6. Step 6: Final answer
    x = 109,046.28

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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.