Home / 279,427.68-419,223.18-89,883.78

Finding the Fourth Proportional to 279,427.68, 419,223.18 and 89,883.78

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Solution

The fourth proportional to 279,427.68, 419,223.18 and 89,883.78 is: 134,851.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,427.68 : 419,223.18 = 89,883.78 : x
  2. Step 2: Convert to fraction form
    279,427.68/419,223.18 = 89,883.78/x
  3. Step 3: Cross multiply
    279,427.68x = 419,223.18 × 89,883.78
  4. Step 4: Simplify right side
    279,427.68x = 37,681,364,082.02
  5. Step 5: Solve for x
    x = 37,681,364,082.02/279,427.68
  6. Step 6: Final answer
    x = 134,851.94

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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.