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Finding the Fourth Proportional to 330,230.79, 495,242.46 and 140,689.17

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Solution

The fourth proportional to 330,230.79, 495,242.46 and 140,689.17 is: 210,989.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,230.79 : 495,242.46 = 140,689.17 : x
  2. Step 2: Convert to fraction form
    330,230.79/495,242.46 = 140,689.17/x
  3. Step 3: Cross multiply
    330,230.79x = 495,242.46 × 140,689.17
  4. Step 4: Simplify right side
    330,230.79x = 69,675,250,646.16
  5. Step 5: Solve for x
    x = 69,675,250,646.16/330,230.79
  6. Step 6: Final answer
    x = 210,989.56

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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.