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Finding the Fourth Proportional to 278,697.52, 417,753.42 and 136,346.20

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Solution

The fourth proportional to 278,697.52, 417,753.42 and 136,346.20 is: 204,376.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,697.52 : 417,753.42 = 136,346.20 : x
  2. Step 2: Convert to fraction form
    278,697.52/417,753.42 = 136,346.20/x
  3. Step 3: Cross multiply
    278,697.52x = 417,753.42 × 136,346.20
  4. Step 4: Simplify right side
    278,697.52x = 56,959,091,354.00
  5. Step 5: Solve for x
    x = 56,959,091,354.00/278,697.52
  6. Step 6: Final answer
    x = 204,376.03

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1.5x scale

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.