Home / 231,137.75-318,875.10-140,479.11

Finding the Fourth Proportional to 231,137.75, 318,875.10 and 140,479.11

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Solution

The fourth proportional to 231,137.75, 318,875.10 and 140,479.11 is: 193,803.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,137.75 : 318,875.10 = 140,479.11 : x
  2. Step 2: Convert to fraction form
    231,137.75/318,875.10 = 140,479.11/x
  3. Step 3: Cross multiply
    231,137.75x = 318,875.10 × 140,479.11
  4. Step 4: Simplify right side
    231,137.75x = 44,795,290,249.16
  5. Step 5: Solve for x
    x = 44,795,290,249.16/231,137.75
  6. Step 6: Final answer
    x = 193,803.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.