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Finding the Fourth Proportional to 337,991.40, 506,987.10 and 213,882.60

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Solution

The fourth proportional to 337,991.40, 506,987.10 and 213,882.60 is: 320,823.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,991.40 : 506,987.10 = 213,882.60 : x
  2. Step 2: Convert to fraction form
    337,991.40/506,987.10 = 213,882.60/x
  3. Step 3: Cross multiply
    337,991.40x = 506,987.10 × 213,882.60
  4. Step 4: Simplify right side
    337,991.40x = 108,435,719,114.46
  5. Step 5: Solve for x
    x = 108,435,719,114.46/337,991.40
  6. Step 6: Final answer
    x = 320,823.90

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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.