Home / 287,676,937.20-431,515,405.80-166,819,234.80

Finding the Fourth Proportional to 287,676,937.20, 431,515,405.80 and 166,819,234.80

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Solution

The fourth proportional to 287,676,937.20, 431,515,405.80 and 166,819,234.80 is: 250,228,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,676,937.20 : 431,515,405.80 = 166,819,234.80 : x
  2. Step 2: Convert to fraction form
    287,676,937.20/431,515,405.80 = 166,819,234.80/x
  3. Step 3: Cross multiply
    287,676,937.20x = 431,515,405.80 × 166,819,234.80
  4. Step 4: Simplify right side
    287,676,937.20x = 71,985,069,799,967,488
  5. Step 5: Solve for x
    x = 71,985,069,799,967,488/287,676,937.20
  6. Step 6: Final answer
    x = 250,228,852.20

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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.