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Finding the Fourth Proportional to 178,731.20, 268,132.80 and 52,371.20

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Solution

The fourth proportional to 178,731.20, 268,132.80 and 52,371.20 is: 78,567.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,731.20 : 268,132.80 = 52,371.20 : x
  2. Step 2: Convert to fraction form
    178,731.20/268,132.80 = 52,371.20/x
  3. Step 3: Cross multiply
    178,731.20x = 268,132.80 × 52,371.20
  4. Step 4: Simplify right side
    178,731.20x = 14,042,436,495.36
  5. Step 5: Solve for x
    x = 14,042,436,495.36/178,731.20
  6. Step 6: Final answer
    x = 78,567.35

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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.