Home / 318,184.80-439,086.60-172,986

Finding the Fourth Proportional to 318,184.80, 439,086.60 and 172,986

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Solution

The fourth proportional to 318,184.80, 439,086.60 and 172,986 is: 238,716.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,184.80 : 439,086.60 = 172,986 : x
  2. Step 2: Convert to fraction form
    318,184.80/439,086.60 = 172,986/x
  3. Step 3: Cross multiply
    318,184.80x = 439,086.60 × 172,986
  4. Step 4: Simplify right side
    318,184.80x = 75,955,834,587.60
  5. Step 5: Solve for x
    x = 75,955,834,587.60/318,184.80
  6. Step 6: Final answer
    x = 238,716.10

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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.