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Finding the Fourth Proportional to 479,565.60, 661,816.56 and 261,787.20

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Solution

The fourth proportional to 479,565.60, 661,816.56 and 261,787.20 is: 361,275.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,565.60 : 661,816.56 = 261,787.20 : x
  2. Step 2: Convert to fraction form
    479,565.60/661,816.56 = 261,787.20/x
  3. Step 3: Cross multiply
    479,565.60x = 661,816.56 × 261,787.20
  4. Step 4: Simplify right side
    479,565.60x = 173,255,104,156.03
  5. Step 5: Solve for x
    x = 173,255,104,156.03/479,565.60
  6. Step 6: Final answer
    x = 361,275.09

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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.