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Finding the Fourth Proportional to 451,008.98, 622,370.18 and 247,060.78

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Solution

The fourth proportional to 451,008.98, 622,370.18 and 247,060.78 is: 340,931.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,008.98 : 622,370.18 = 247,060.78 : x
  2. Step 2: Convert to fraction form
    451,008.98/622,370.18 = 247,060.78/x
  3. Step 3: Cross multiply
    451,008.98x = 622,370.18 × 247,060.78
  4. Step 4: Simplify right side
    451,008.98x = 153,763,262,119.54
  5. Step 5: Solve for x
    x = 153,763,262,119.54/451,008.98
  6. Step 6: Final answer
    x = 340,931.71

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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.