Home / 223,867.55-308,939.36-128,355.80

Finding the Fourth Proportional to 223,867.55, 308,939.36 and 128,355.80

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Solution

The fourth proportional to 223,867.55, 308,939.36 and 128,355.80 is: 177,132.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,867.55 : 308,939.36 = 128,355.80 : x
  2. Step 2: Convert to fraction form
    223,867.55/308,939.36 = 128,355.80/x
  3. Step 3: Cross multiply
    223,867.55x = 308,939.36 × 128,355.80
  4. Step 4: Simplify right side
    223,867.55x = 39,654,156,517.81
  5. Step 5: Solve for x
    x = 39,654,156,517.81/223,867.55
  6. Step 6: Final answer
    x = 177,132.22

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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.