Home / 218,945.58-302,148.24-128,279.84

Finding the Fourth Proportional to 218,945.58, 302,148.24 and 128,279.84

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Solution

The fourth proportional to 218,945.58, 302,148.24 and 128,279.84 is: 177,028.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,945.58 : 302,148.24 = 128,279.84 : x
  2. Step 2: Convert to fraction form
    218,945.58/302,148.24 = 128,279.84/x
  3. Step 3: Cross multiply
    218,945.58x = 302,148.24 × 128,279.84
  4. Step 4: Simplify right side
    218,945.58x = 38,759,527,883.48
  5. Step 5: Solve for x
    x = 38,759,527,883.48/218,945.58
  6. Step 6: Final answer
    x = 177,028.14

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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.