Home / 258,286.26-387,438.03-89,808.04

Finding the Fourth Proportional to 258,286.26, 387,438.03 and 89,808.04

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Solution

The fourth proportional to 258,286.26, 387,438.03 and 89,808.04 is: 134,715.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,286.26 : 387,438.03 = 89,808.04 : x
  2. Step 2: Convert to fraction form
    258,286.26/387,438.03 = 89,808.04/x
  3. Step 3: Cross multiply
    258,286.26x = 387,438.03 × 89,808.04
  4. Step 4: Simplify right side
    258,286.26x = 34,795,048,158.57
  5. Step 5: Solve for x
    x = 34,795,048,158.57/258,286.26
  6. Step 6: Final answer
    x = 134,715.06

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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.