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Finding the Fourth Proportional to 330,143.90, 495,215.85 and 282,904.70

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Solution

The fourth proportional to 330,143.90, 495,215.85 and 282,904.70 is: 424,357.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,143.90 : 495,215.85 = 282,904.70 : x
  2. Step 2: Convert to fraction form
    330,143.90/495,215.85 = 282,904.70/x
  3. Step 3: Cross multiply
    330,143.90x = 495,215.85 × 282,904.70
  4. Step 4: Simplify right side
    330,143.90x = 140,098,891,479.50
  5. Step 5: Solve for x
    x = 140,098,891,479.50/330,143.90
  6. Step 6: Final answer
    x = 424,357.05

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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.