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Finding the Fourth Proportional to 330,545.96, 495,730.38 and 143,513

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Solution

The fourth proportional to 330,545.96, 495,730.38 and 143,513 is: 215,231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,545.96 : 495,730.38 = 143,513 : x
  2. Step 2: Convert to fraction form
    330,545.96/495,730.38 = 143,513/x
  3. Step 3: Cross multiply
    330,545.96x = 495,730.38 × 143,513
  4. Step 4: Simplify right side
    330,545.96x = 71,143,754,024.94
  5. Step 5: Solve for x
    x = 71,143,754,024.94/330,545.96
  6. Step 6: Final answer
    x = 215,231.05

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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.