Home / 324,428.12-486,643.34-99,787.04

Finding the Fourth Proportional to 324,428.12, 486,643.34 and 99,787.04

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Solution

The fourth proportional to 324,428.12, 486,643.34 and 99,787.04 is: 149,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,428.12 : 486,643.34 = 99,787.04 : x
  2. Step 2: Convert to fraction form
    324,428.12/486,643.34 = 99,787.04/x
  3. Step 3: Cross multiply
    324,428.12x = 486,643.34 × 99,787.04
  4. Step 4: Simplify right side
    324,428.12x = 48,560,699,911.53
  5. Step 5: Solve for x
    x = 48,560,699,911.53/324,428.12
  6. Step 6: Final answer
    x = 149,680.92

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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.