Home / 279,145.17-418,787.91-89,622.50

Finding the Fourth Proportional to 279,145.17, 418,787.91 and 89,622.50

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Solution

The fourth proportional to 279,145.17, 418,787.91 and 89,622.50 is: 134,456.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,145.17 : 418,787.91 = 89,622.50 : x
  2. Step 2: Convert to fraction form
    279,145.17/418,787.91 = 89,622.50/x
  3. Step 3: Cross multiply
    279,145.17x = 418,787.91 × 89,622.50
  4. Step 4: Simplify right side
    279,145.17x = 37,532,817,370.04
  5. Step 5: Solve for x
    x = 37,532,817,370.04/279,145.17
  6. Step 6: Final answer
    x = 134,456.27

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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.