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Finding the Fourth Proportional to 330,495.96, 495,655.38 and 143,463

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Solution

The fourth proportional to 330,495.96, 495,655.38 and 143,463 is: 215,156.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,495.96 : 495,655.38 = 143,463 : x
  2. Step 2: Convert to fraction form
    330,495.96/495,655.38 = 143,463/x
  3. Step 3: Cross multiply
    330,495.96x = 495,655.38 × 143,463
  4. Step 4: Simplify right side
    330,495.96x = 71,108,207,780.94
  5. Step 5: Solve for x
    x = 71,108,207,780.94/330,495.96
  6. Step 6: Final answer
    x = 215,156.06

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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.