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Finding the Fourth Proportional to 330,426.90, 495,640.74 and 90,542.82

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Solution

The fourth proportional to 330,426.90, 495,640.74 and 90,542.82 is: 135,814.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,426.90 : 495,640.74 = 90,542.82 : x
  2. Step 2: Convert to fraction form
    330,426.90/495,640.74 = 90,542.82/x
  3. Step 3: Cross multiply
    330,426.90x = 495,640.74 × 90,542.82
  4. Step 4: Simplify right side
    330,426.90x = 44,876,710,306.49
  5. Step 5: Solve for x
    x = 44,876,710,306.49/330,426.90
  6. Step 6: Final answer
    x = 135,814.34

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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.