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Finding the Fourth Proportional to 274,513.06, 378,774.17 and 172,479.41

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Solution

The fourth proportional to 274,513.06, 378,774.17 and 172,479.41 is: 237,987.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,513.06 : 378,774.17 = 172,479.41 : x
  2. Step 2: Convert to fraction form
    274,513.06/378,774.17 = 172,479.41/x
  3. Step 3: Cross multiply
    274,513.06x = 378,774.17 × 172,479.41
  4. Step 4: Simplify right side
    274,513.06x = 65,330,742,608.57
  5. Step 5: Solve for x
    x = 65,330,742,608.57/274,513.06
  6. Step 6: Final answer
    x = 237,987.74

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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.