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Finding the Fourth Proportional to 391,330.58, 586,755.97 and 166,563.03

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Solution

The fourth proportional to 391,330.58, 586,755.97 and 166,563.03 is: 249,742.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,330.58 : 586,755.97 = 166,563.03 : x
  2. Step 2: Convert to fraction form
    391,330.58/586,755.97 = 166,563.03/x
  3. Step 3: Cross multiply
    391,330.58x = 586,755.97 × 166,563.03
  4. Step 4: Simplify right side
    391,330.58x = 97,731,854,017.72
  5. Step 5: Solve for x
    x = 97,731,854,017.72/391,330.58
  6. Step 6: Final answer
    x = 249,742.44

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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.