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Finding the Fourth Proportional to 220,434.57, 304,268.45 and 129,783.33

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Solution

The fourth proportional to 220,434.57, 304,268.45 and 129,783.33 is: 179,141.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,434.57 : 304,268.45 = 129,783.33 : x
  2. Step 2: Convert to fraction form
    220,434.57/304,268.45 = 129,783.33/x
  3. Step 3: Cross multiply
    220,434.57x = 304,268.45 × 129,783.33
  4. Step 4: Simplify right side
    220,434.57x = 39,488,972,006.02
  5. Step 5: Solve for x
    x = 39,488,972,006.02/220,434.57
  6. Step 6: Final answer
    x = 179,141.47

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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.