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Finding the Fourth Proportional to 238,972.32, 358,510.32 and 72,756

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Solution

The fourth proportional to 238,972.32, 358,510.32 and 72,756 is: 109,149.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,972.32 : 358,510.32 = 72,756 : x
  2. Step 2: Convert to fraction form
    238,972.32/358,510.32 = 72,756/x
  3. Step 3: Cross multiply
    238,972.32x = 358,510.32 × 72,756
  4. Step 4: Simplify right side
    238,972.32x = 26,083,776,841.92
  5. Step 5: Solve for x
    x = 26,083,776,841.92/238,972.32
  6. Step 6: Final answer
    x = 109,149.78

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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.