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Finding the Fourth Proportional to 220,851.32, 304,764 and 125,356.64

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Solution

The fourth proportional to 220,851.32, 304,764 and 125,356.64 is: 172,986.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,851.32 : 304,764 = 125,356.64 : x
  2. Step 2: Convert to fraction form
    220,851.32/304,764 = 125,356.64/x
  3. Step 3: Cross multiply
    220,851.32x = 304,764 × 125,356.64
  4. Step 4: Simplify right side
    220,851.32x = 38,204,191,032.96
  5. Step 5: Solve for x
    x = 38,204,191,032.96/220,851.32
  6. Step 6: Final answer
    x = 172,986.02

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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.