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Finding the Fourth Proportional to 178,819.20, 268,264.80 and 52,459.20

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Solution

The fourth proportional to 178,819.20, 268,264.80 and 52,459.20 is: 78,699.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,819.20 : 268,264.80 = 52,459.20 : x
  2. Step 2: Convert to fraction form
    178,819.20/268,264.80 = 52,459.20/x
  3. Step 3: Cross multiply
    178,819.20x = 268,264.80 × 52,459.20
  4. Step 4: Simplify right side
    178,819.20x = 14,072,956,796.16
  5. Step 5: Solve for x
    x = 14,072,956,796.16/178,819.20
  6. Step 6: Final answer
    x = 78,699.36

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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.