Home / 218,948.91-302,170.44-137,290.17

Finding the Fourth Proportional to 218,948.91, 302,170.44 and 137,290.17

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Solution

The fourth proportional to 218,948.91, 302,170.44 and 137,290.17 is: 189,473.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,948.91 : 302,170.44 = 137,290.17 : x
  2. Step 2: Convert to fraction form
    218,948.91/302,170.44 = 137,290.17/x
  3. Step 3: Cross multiply
    218,948.91x = 302,170.44 × 137,290.17
  4. Step 4: Simplify right side
    218,948.91x = 41,485,031,076.57
  5. Step 5: Solve for x
    x = 41,485,031,076.57/218,948.91
  6. Step 6: Final answer
    x = 189,473.57

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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.