Home / 218,966.43-302,173.89-128,304.33

Finding the Fourth Proportional to 218,966.43, 302,173.89 and 128,304.33

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Solution

The fourth proportional to 218,966.43, 302,173.89 and 128,304.33 is: 177,060.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,966.43 : 302,173.89 = 128,304.33 : x
  2. Step 2: Convert to fraction form
    218,966.43/302,173.89 = 128,304.33/x
  3. Step 3: Cross multiply
    218,966.43x = 302,173.89 × 128,304.33
  4. Step 4: Simplify right side
    218,966.43x = 38,770,218,499.94
  5. Step 5: Solve for x
    x = 38,770,218,499.94/218,966.43
  6. Step 6: Final answer
    x = 177,060.10

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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.