Home / 218,610,719.88-327,973,508.88-78,565,314.72

Finding the Fourth Proportional to 218,610,719.88, 327,973,508.88 and 78,565,314.72

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Solution

The fourth proportional to 218,610,719.88, 327,973,508.88 and 78,565,314.72 is: 117,868,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,610,719.88 : 327,973,508.88 = 78,565,314.72 : x
  2. Step 2: Convert to fraction form
    218,610,719.88/327,973,508.88 = 78,565,314.72/x
  3. Step 3: Cross multiply
    218,610,719.88x = 327,973,508.88 × 78,565,314.72
  4. Step 4: Simplify right side
    218,610,719.88x = 25,767,341,944,979,912
  5. Step 5: Solve for x
    x = 25,767,341,944,979,912/218,610,719.88
  6. Step 6: Final answer
    x = 117,868,611.20

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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.