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Finding the Fourth Proportional to 330,411.96, 495,421.11 and 130,760.73

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Solution

The fourth proportional to 330,411.96, 495,421.11 and 130,760.73 is: 196,063.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,411.96 : 495,421.11 = 130,760.73 : x
  2. Step 2: Convert to fraction form
    330,411.96/495,421.11 = 130,760.73/x
  3. Step 3: Cross multiply
    330,411.96x = 495,421.11 × 130,760.73
  4. Step 4: Simplify right side
    330,411.96x = 64,781,626,001.01
  5. Step 5: Solve for x
    x = 64,781,626,001.01/330,411.96
  6. Step 6: Final answer
    x = 196,063.20

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1.5x scale

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.