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Finding the Fourth Proportional to 400,446.64, 552,561.78 and 239,267.62

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Solution

The fourth proportional to 400,446.64, 552,561.78 and 239,267.62 is: 330,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,446.64 : 552,561.78 = 239,267.62 : x
  2. Step 2: Convert to fraction form
    400,446.64/552,561.78 = 239,267.62/x
  3. Step 3: Cross multiply
    400,446.64x = 552,561.78 × 239,267.62
  4. Step 4: Simplify right side
    400,446.64x = 132,210,142,003.56
  5. Step 5: Solve for x
    x = 132,210,142,003.56/400,446.64
  6. Step 6: Final answer
    x = 330,156.70

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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.