Home / 218,943.20-302,141.12-123,449.34

Finding the Fourth Proportional to 218,943.20, 302,141.12 and 123,449.34

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Solution

The fourth proportional to 218,943.20, 302,141.12 and 123,449.34 is: 170,359.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,943.20 : 302,141.12 = 123,449.34 : x
  2. Step 2: Convert to fraction form
    218,943.20/302,141.12 = 123,449.34/x
  3. Step 3: Cross multiply
    218,943.20x = 302,141.12 × 123,449.34
  4. Step 4: Simplify right side
    218,943.20x = 37,299,121,850.86
  5. Step 5: Solve for x
    x = 37,299,121,850.86/218,943.20
  6. Step 6: Final answer
    x = 170,359.81

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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.