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Finding the Fourth Proportional to 330,543.96, 495,727.38 and 143,511

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Solution

The fourth proportional to 330,543.96, 495,727.38 and 143,511 is: 215,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,543.96 : 495,727.38 = 143,511 : x
  2. Step 2: Convert to fraction form
    330,543.96/495,727.38 = 143,511/x
  3. Step 3: Cross multiply
    330,543.96x = 495,727.38 × 143,511
  4. Step 4: Simplify right side
    330,543.96x = 71,142,332,031.18
  5. Step 5: Solve for x
    x = 71,142,332,031.18/330,543.96
  6. Step 6: Final answer
    x = 215,228.05

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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.