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Finding the Fourth Proportional to 274,689.43, 378,699.30 and 234,831.35

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Solution

The fourth proportional to 274,689.43, 378,699.30 and 234,831.35 is: 323,749.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,689.43 : 378,699.30 = 234,831.35 : x
  2. Step 2: Convert to fraction form
    274,689.43/378,699.30 = 234,831.35/x
  3. Step 3: Cross multiply
    274,689.43x = 378,699.30 × 234,831.35
  4. Step 4: Simplify right side
    274,689.43x = 88,930,468,809.80
  5. Step 5: Solve for x
    x = 88,930,468,809.80/274,689.43
  6. Step 6: Final answer
    x = 323,749.15

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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.