Home / 218,968.91-302,177.33-128,306.82

Finding the Fourth Proportional to 218,968.91, 302,177.33 and 128,306.82

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Solution

The fourth proportional to 218,968.91, 302,177.33 and 128,306.82 is: 177,063.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,968.91 : 302,177.33 = 128,306.82 : x
  2. Step 2: Convert to fraction form
    218,968.91/302,177.33 = 128,306.82/x
  3. Step 3: Cross multiply
    218,968.91x = 302,177.33 × 128,306.82
  4. Step 4: Simplify right side
    218,968.91x = 38,771,412,288.39
  5. Step 5: Solve for x
    x = 38,771,412,288.39/218,968.91
  6. Step 6: Final answer
    x = 177,063.55

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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.