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Finding the Fourth Proportional to 220,886.52, 304,815.39 and 134,989.21

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Solution

The fourth proportional to 220,886.52, 304,815.39 and 134,989.21 is: 186,280.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,886.52 : 304,815.39 = 134,989.21 : x
  2. Step 2: Convert to fraction form
    220,886.52/304,815.39 = 134,989.21/x
  3. Step 3: Cross multiply
    220,886.52x = 304,815.39 × 134,989.21
  4. Step 4: Simplify right side
    220,886.52x = 41,146,788,691.94
  5. Step 5: Solve for x
    x = 41,146,788,691.94/220,886.52
  6. Step 6: Final answer
    x = 186,280.22

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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.