Home / 386,421.90-579,522.08-130,226.57

Finding the Fourth Proportional to 386,421.90, 579,522.08 and 130,226.57

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Solution

The fourth proportional to 386,421.90, 579,522.08 and 130,226.57 is: 195,302.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,421.90 : 579,522.08 = 130,226.57 : x
  2. Step 2: Convert to fraction form
    386,421.90/579,522.08 = 130,226.57/x
  3. Step 3: Cross multiply
    386,421.90x = 579,522.08 × 130,226.57
  4. Step 4: Simplify right side
    386,421.90x = 75,469,174,492.04
  5. Step 5: Solve for x
    x = 75,469,174,492.04/386,421.90
  6. Step 6: Final answer
    x = 195,302.53

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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.