Home / 279,943.17-419,915.08-69,581.10

Finding the Fourth Proportional to 279,943.17, 419,915.08 and 69,581.10

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Solution

The fourth proportional to 279,943.17, 419,915.08 and 69,581.10 is: 104,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,943.17 : 419,915.08 = 69,581.10 : x
  2. Step 2: Convert to fraction form
    279,943.17/419,915.08 = 69,581.10/x
  3. Step 3: Cross multiply
    279,943.17x = 419,915.08 × 69,581.10
  4. Step 4: Simplify right side
    279,943.17x = 29,218,154,638.95
  5. Step 5: Solve for x
    x = 29,218,154,638.95/279,943.17
  6. Step 6: Final answer
    x = 104,371.74

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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.