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Finding the Fourth Proportional to 445,851.20, 615,274.62 and 254,868.86

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Solution

The fourth proportional to 445,851.20, 615,274.62 and 254,868.86 is: 351,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,851.20 : 615,274.62 = 254,868.86 : x
  2. Step 2: Convert to fraction form
    445,851.20/615,274.62 = 254,868.86/x
  3. Step 3: Cross multiply
    445,851.20x = 615,274.62 × 254,868.86
  4. Step 4: Simplify right side
    445,851.20x = 156,814,340,986.33
  5. Step 5: Solve for x
    x = 156,814,340,986.33/445,851.20
  6. Step 6: Final answer
    x = 351,719.01

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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.