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Finding the Fourth Proportional to 445,061.15, 667,696.74 and 145,540.56

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Solution

The fourth proportional to 445,061.15, 667,696.74 and 145,540.56 is: 218,345.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,061.15 : 667,696.74 = 145,540.56 : x
  2. Step 2: Convert to fraction form
    445,061.15/667,696.74 = 145,540.56/x
  3. Step 3: Cross multiply
    445,061.15x = 667,696.74 × 145,540.56
  4. Step 4: Simplify right side
    445,061.15x = 97,176,959,407.86
  5. Step 5: Solve for x
    x = 97,176,959,407.86/445,061.15
  6. Step 6: Final answer
    x = 218,345.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.