Home / 281,360,379.20-388,279,603.06-155,914,670.53

Finding the Fourth Proportional to 281,360,379.20, 388,279,603.06 and 155,914,670.53

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Solution

The fourth proportional to 281,360,379.20, 388,279,603.06 and 155,914,670.53 is: 215,163,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,360,379.20 : 388,279,603.06 = 155,914,670.53 : x
  2. Step 2: Convert to fraction form
    281,360,379.20/388,279,603.06 = 155,914,670.53/x
  3. Step 3: Cross multiply
    281,360,379.20x = 388,279,603.06 × 155,914,670.53
  4. Step 4: Simplify right side
    281,360,379.20x = 60,538,486,385,979,568
  5. Step 5: Solve for x
    x = 60,538,486,385,979,568/281,360,379.20
  6. Step 6: Final answer
    x = 215,163,508.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.