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Finding the Fourth Proportional to 218,775.52, 301,882.98 and 121,955.61

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Solution

The fourth proportional to 218,775.52, 301,882.98 and 121,955.61 is: 168,283.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,775.52 : 301,882.98 = 121,955.61 : x
  2. Step 2: Convert to fraction form
    218,775.52/301,882.98 = 121,955.61/x
  3. Step 3: Cross multiply
    218,775.52x = 301,882.98 × 121,955.61
  4. Step 4: Simplify right side
    218,775.52x = 36,816,323,729.23
  5. Step 5: Solve for x
    x = 36,816,323,729.23/218,775.52
  6. Step 6: Final answer
    x = 168,283.56

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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.