Home / 781,545.43-1,172,337.99-212,931.10

Finding the Fourth Proportional to 781,545.43, 1,172,337.99 and 212,931.10

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Solution

The fourth proportional to 781,545.43, 1,172,337.99 and 212,931.10 is: 319,402.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,545.43 : 1,172,337.99 = 212,931.10 : x
  2. Step 2: Convert to fraction form
    781,545.43/1,172,337.99 = 212,931.10/x
  3. Step 3: Cross multiply
    781,545.43x = 1,172,337.99 × 212,931.10
  4. Step 4: Simplify right side
    781,545.43x = 249,627,217,782.49
  5. Step 5: Solve for x
    x = 249,627,217,782.49/781,545.43
  6. Step 6: Final answer
    x = 319,402.06

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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.