Home / 218,976.62-302,187.97-128,314.53

Finding the Fourth Proportional to 218,976.62, 302,187.97 and 128,314.53

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Solution

The fourth proportional to 218,976.62, 302,187.97 and 128,314.53 is: 177,074.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,976.62 : 302,187.97 = 128,314.53 : x
  2. Step 2: Convert to fraction form
    218,976.62/302,187.97 = 128,314.53/x
  3. Step 3: Cross multiply
    218,976.62x = 302,187.97 × 128,314.53
  4. Step 4: Simplify right side
    218,976.62x = 38,775,106,780.83
  5. Step 5: Solve for x
    x = 38,775,106,780.83/218,976.62
  6. Step 6: Final answer
    x = 177,074.19

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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.