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Finding the Fourth Proportional to 275,718.19, 380,446.36 and 172,340.15

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Solution

The fourth proportional to 275,718.19, 380,446.36 and 172,340.15 is: 237,801.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,718.19 : 380,446.36 = 172,340.15 : x
  2. Step 2: Convert to fraction form
    275,718.19/380,446.36 = 172,340.15/x
  3. Step 3: Cross multiply
    275,718.19x = 380,446.36 × 172,340.15
  4. Step 4: Simplify right side
    275,718.19x = 65,566,182,749.35
  5. Step 5: Solve for x
    x = 65,566,182,749.35/275,718.19
  6. Step 6: Final answer
    x = 237,801.44

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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.