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Finding the Fourth Proportional to 220,239, 303,904.04 and 129,575.03

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Solution

The fourth proportional to 220,239, 303,904.04 and 129,575.03 is: 178,798.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,239 : 303,904.04 = 129,575.03 : x
  2. Step 2: Convert to fraction form
    220,239/303,904.04 = 129,575.03/x
  3. Step 3: Cross multiply
    220,239x = 303,904.04 × 129,575.03
  4. Step 4: Simplify right side
    220,239x = 39,378,372,932.73
  5. Step 5: Solve for x
    x = 39,378,372,932.73/220,239
  6. Step 6: Final answer
    x = 178,798.36

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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.