Home / 439,211.12-658,809.74-139,687.38

Finding the Fourth Proportional to 439,211.12, 658,809.74 and 139,687.38

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Solution

The fourth proportional to 439,211.12, 658,809.74 and 139,687.38 is: 209,528.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,211.12 : 658,809.74 = 139,687.38 : x
  2. Step 2: Convert to fraction form
    439,211.12/658,809.74 = 139,687.38/x
  3. Step 3: Cross multiply
    439,211.12x = 658,809.74 × 139,687.38
  4. Step 4: Simplify right side
    439,211.12x = 92,027,406,499.08
  5. Step 5: Solve for x
    x = 92,027,406,499.08/439,211.12
  6. Step 6: Final answer
    x = 209,528.86

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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.