Home / 259,748.30-389,672.67-99,812.18

Finding the Fourth Proportional to 259,748.30, 389,672.67 and 99,812.18

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Solution

The fourth proportional to 259,748.30, 389,672.67 and 99,812.18 is: 149,737.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,748.30 : 389,672.67 = 99,812.18 : x
  2. Step 2: Convert to fraction form
    259,748.30/389,672.67 = 99,812.18/x
  3. Step 3: Cross multiply
    259,748.30x = 389,672.67 × 99,812.18
  4. Step 4: Simplify right side
    259,748.30x = 38,894,078,679.12
  5. Step 5: Solve for x
    x = 38,894,078,679.12/259,748.30
  6. Step 6: Final answer
    x = 149,737.57

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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.