Home / 218,862.59-302,053.62-128,294.66

Finding the Fourth Proportional to 218,862.59, 302,053.62 and 128,294.66

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Solution

The fourth proportional to 218,862.59, 302,053.62 and 128,294.66 is: 177,060.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,862.59 : 302,053.62 = 128,294.66 : x
  2. Step 2: Convert to fraction form
    218,862.59/302,053.62 = 128,294.66/x
  3. Step 3: Cross multiply
    218,862.59x = 302,053.62 × 128,294.66
  4. Step 4: Simplify right side
    218,862.59x = 38,751,866,479.67
  5. Step 5: Solve for x
    x = 38,751,866,479.67/218,862.59
  6. Step 6: Final answer
    x = 177,060.26

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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.