Home / 318,412.12-439,411.57-173,221.06

Finding the Fourth Proportional to 318,412.12, 439,411.57 and 173,221.06

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Solution

The fourth proportional to 318,412.12, 439,411.57 and 173,221.06 is: 239,046.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,412.12 : 439,411.57 = 173,221.06 : x
  2. Step 2: Convert to fraction form
    318,412.12/439,411.57 = 173,221.06/x
  3. Step 3: Cross multiply
    318,412.12x = 439,411.57 × 173,221.06
  4. Step 4: Simplify right side
    318,412.12x = 76,115,337,931.66
  5. Step 5: Solve for x
    x = 76,115,337,931.66/318,412.12
  6. Step 6: Final answer
    x = 239,046.61

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1.5x scale

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.