Home / 318,581.12-439,642-173,387.46

Finding the Fourth Proportional to 318,581.12, 439,642 and 173,387.46

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Solution

The fourth proportional to 318,581.12, 439,642 and 173,387.46 is: 239,274.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,581.12 : 439,642 = 173,387.46 : x
  2. Step 2: Convert to fraction form
    318,581.12/439,642 = 173,387.46/x
  3. Step 3: Cross multiply
    318,581.12x = 439,642 × 173,387.46
  4. Step 4: Simplify right side
    318,581.12x = 76,228,409,689.32
  5. Step 5: Solve for x
    x = 76,228,409,689.32/318,581.12
  6. Step 6: Final answer
    x = 239,274.72

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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.