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Finding the Fourth Proportional to 330,139.40, 495,209.10 and 282,900.20

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Solution

The fourth proportional to 330,139.40, 495,209.10 and 282,900.20 is: 424,350.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,139.40 : 495,209.10 = 282,900.20 : x
  2. Step 2: Convert to fraction form
    330,139.40/495,209.10 = 282,900.20/x
  3. Step 3: Cross multiply
    330,139.40x = 495,209.10 × 282,900.20
  4. Step 4: Simplify right side
    330,139.40x = 140,094,753,431.82
  5. Step 5: Solve for x
    x = 140,094,753,431.82/330,139.40
  6. Step 6: Final answer
    x = 424,350.30

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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.