Home / 389,719.80-584,433.90-136,902.60

Finding the Fourth Proportional to 389,719.80, 584,433.90 and 136,902.60

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Solution

The fourth proportional to 389,719.80, 584,433.90 and 136,902.60 is: 205,302.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,719.80 : 584,433.90 = 136,902.60 : x
  2. Step 2: Convert to fraction form
    389,719.80/584,433.90 = 136,902.60/x
  3. Step 3: Cross multiply
    389,719.80x = 584,433.90 × 136,902.60
  4. Step 4: Simplify right side
    389,719.80x = 80,010,520,438.14
  5. Step 5: Solve for x
    x = 80,010,520,438.14/389,719.80
  6. Step 6: Final answer
    x = 205,302.68

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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.