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Finding the Fourth Proportional to 371,572.47, 512,771 and 218,616.42

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Solution

The fourth proportional to 371,572.47, 512,771 and 218,616.42 is: 301,691.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,572.47 : 512,771 = 218,616.42 : x
  2. Step 2: Convert to fraction form
    371,572.47/512,771 = 218,616.42/x
  3. Step 3: Cross multiply
    371,572.47x = 512,771 × 218,616.42
  4. Step 4: Simplify right side
    371,572.47x = 112,100,160,299.82
  5. Step 5: Solve for x
    x = 112,100,160,299.82/371,572.47
  6. Step 6: Final answer
    x = 301,691.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.