Home / 639,577.20-959,190.30-240,187.80

Finding the Fourth Proportional to 639,577.20, 959,190.30 and 240,187.80

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Solution

The fourth proportional to 639,577.20, 959,190.30 and 240,187.80 is: 360,215.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,577.20 : 959,190.30 = 240,187.80 : x
  2. Step 2: Convert to fraction form
    639,577.20/959,190.30 = 240,187.80/x
  3. Step 3: Cross multiply
    639,577.20x = 959,190.30 × 240,187.80
  4. Step 4: Simplify right side
    639,577.20x = 230,385,807,938.34
  5. Step 5: Solve for x
    x = 230,385,807,938.34/639,577.20
  6. Step 6: Final answer
    x = 360,215.79

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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.