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Finding the Fourth Proportional to 391,250.43, 586,343.21 and 166,328.19

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Solution

The fourth proportional to 391,250.43, 586,343.21 and 166,328.19 is: 249,265.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,250.43 : 586,343.21 = 166,328.19 : x
  2. Step 2: Convert to fraction form
    391,250.43/586,343.21 = 166,328.19/x
  3. Step 3: Cross multiply
    391,250.43x = 586,343.21 × 166,328.19
  4. Step 4: Simplify right side
    391,250.43x = 97,525,404,006.45
  5. Step 5: Solve for x
    x = 97,525,404,006.45/391,250.43
  6. Step 6: Final answer
    x = 249,265.93

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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.