Home / 398,741,321.48-550,293,446.88-220,159,638.38

Finding the Fourth Proportional to 398,741,321.48, 550,293,446.88 and 220,159,638.38

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Solution

The fourth proportional to 398,741,321.48, 550,293,446.88 and 220,159,638.38 is: 303,837,098.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,741,321.48 : 550,293,446.88 = 220,159,638.38 : x
  2. Step 2: Convert to fraction form
    398,741,321.48/550,293,446.88 = 220,159,638.38/x
  3. Step 3: Cross multiply
    398,741,321.48x = 550,293,446.88 × 220,159,638.38
  4. Step 4: Simplify right side
    398,741,321.48x = 121,152,406,266,882,976
  5. Step 5: Solve for x
    x = 121,152,406,266,882,976/398,741,321.48
  6. Step 6: Final answer
    x = 303,837,098.74

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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.