Home / 378,531,990.20-567,851,129.40-119,720,223.20

Finding the Fourth Proportional to 378,531,990.20, 567,851,129.40 and 119,720,223.20

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Solution

The fourth proportional to 378,531,990.20, 567,851,129.40 and 119,720,223.20 is: 179,597,142.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,531,990.20 : 567,851,129.40 = 119,720,223.20 : x
  2. Step 2: Convert to fraction form
    378,531,990.20/567,851,129.40 = 119,720,223.20/x
  3. Step 3: Cross multiply
    378,531,990.20x = 567,851,129.40 × 119,720,223.20
  4. Step 4: Simplify right side
    378,531,990.20x = 67,983,263,956,140,080
  5. Step 5: Solve for x
    x = 67,983,263,956,140,080/378,531,990.20
  6. Step 6: Final answer
    x = 179,597,142.95

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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.