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Finding the Fourth Proportional to 485,410.92, 669,870.17 and 270,564.60

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Solution

The fourth proportional to 485,410.92, 669,870.17 and 270,564.60 is: 373,380.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,410.92 : 669,870.17 = 270,564.60 : x
  2. Step 2: Convert to fraction form
    485,410.92/669,870.17 = 270,564.60/x
  3. Step 3: Cross multiply
    485,410.92x = 669,870.17 × 270,564.60
  4. Step 4: Simplify right side
    485,410.92x = 181,243,154,597.98
  5. Step 5: Solve for x
    x = 181,243,154,597.98/485,410.92
  6. Step 6: Final answer
    x = 373,380.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.