Home / 207,988,818.90-311,899,247.55-71,603,999.70

Finding the Fourth Proportional to 207,988,818.90, 311,899,247.55 and 71,603,999.70

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Solution

The fourth proportional to 207,988,818.90, 311,899,247.55 and 71,603,999.70 is: 107,377,087.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,988,818.90 : 311,899,247.55 = 71,603,999.70 : x
  2. Step 2: Convert to fraction form
    207,988,818.90/311,899,247.55 = 71,603,999.70/x
  3. Step 3: Cross multiply
    207,988,818.90x = 311,899,247.55 × 71,603,999.70
  4. Step 4: Simplify right side
    207,988,818.90x = 22,333,233,628,000,428
  5. Step 5: Solve for x
    x = 22,333,233,628,000,428/207,988,818.90
  6. Step 6: Final answer
    x = 107,377,087.61

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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.