Home / 287,676,948.20-431,515,422.30-166,819,245.80

Finding the Fourth Proportional to 287,676,948.20, 431,515,422.30 and 166,819,245.80

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Solution

The fourth proportional to 287,676,948.20, 431,515,422.30 and 166,819,245.80 is: 250,228,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,676,948.20 : 431,515,422.30 = 166,819,245.80 : x
  2. Step 2: Convert to fraction form
    287,676,948.20/431,515,422.30 = 166,819,245.80/x
  3. Step 3: Cross multiply
    287,676,948.20x = 431,515,422.30 × 166,819,245.80
  4. Step 4: Simplify right side
    287,676,948.20x = 71,985,077,299,154,512
  5. Step 5: Solve for x
    x = 71,985,077,299,154,512/287,676,948.20
  6. Step 6: Final answer
    x = 250,228,868.70

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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.