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Finding the Fourth Proportional to 330,661.76, 456,348.92 and 187,406.43

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Solution

The fourth proportional to 330,661.76, 456,348.92 and 187,406.43 is: 258,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,661.76 : 456,348.92 = 187,406.43 : x
  2. Step 2: Convert to fraction form
    330,661.76/456,348.92 = 187,406.43/x
  3. Step 3: Cross multiply
    330,661.76x = 456,348.92 × 187,406.43
  4. Step 4: Simplify right side
    330,661.76x = 85,522,720,994.52
  5. Step 5: Solve for x
    x = 85,522,720,994.52/330,661.76
  6. Step 6: Final answer
    x = 258,641.10

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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.