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Finding the Fourth Proportional to 220,840.90, 304,761.90 and 125,349.19

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Solution

The fourth proportional to 220,840.90, 304,761.90 and 125,349.19 is: 172,982.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,840.90 : 304,761.90 = 125,349.19 : x
  2. Step 2: Convert to fraction form
    220,840.90/304,761.90 = 125,349.19/x
  3. Step 3: Cross multiply
    220,840.90x = 304,761.90 × 125,349.19
  4. Step 4: Simplify right side
    220,840.90x = 38,201,657,307.86
  5. Step 5: Solve for x
    x = 38,201,657,307.86/220,840.90
  6. Step 6: Final answer
    x = 172,982.71

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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.