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Finding the Fourth Proportional to 330,257.66, 495,550.51 and 130,721.24

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Solution

The fourth proportional to 330,257.66, 495,550.51 and 130,721.24 is: 196,146.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,257.66 : 495,550.51 = 130,721.24 : x
  2. Step 2: Convert to fraction form
    330,257.66/495,550.51 = 130,721.24/x
  3. Step 3: Cross multiply
    330,257.66x = 495,550.51 × 130,721.24
  4. Step 4: Simplify right side
    330,257.66x = 64,778,978,061.91
  5. Step 5: Solve for x
    x = 64,778,978,061.91/330,257.66
  6. Step 6: Final answer
    x = 196,146.79

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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.