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Finding the Fourth Proportional to 330,126.84, 495,063.90 and 140,468.58

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Solution

The fourth proportional to 330,126.84, 495,063.90 and 140,468.58 is: 210,649.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,126.84 : 495,063.90 = 140,468.58 : x
  2. Step 2: Convert to fraction form
    330,126.84/495,063.90 = 140,468.58/x
  3. Step 3: Cross multiply
    330,126.84x = 495,063.90 × 140,468.58
  4. Step 4: Simplify right side
    330,126.84x = 69,540,923,042.26
  5. Step 5: Solve for x
    x = 69,540,923,042.26/330,126.84
  6. Step 6: Final answer
    x = 210,649.10

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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.