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Finding the Fourth Proportional to 445,839.86, 615,269.63 and 254,871.02

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Solution

The fourth proportional to 445,839.86, 615,269.63 and 254,871.02 is: 351,728.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,839.86 : 615,269.63 = 254,871.02 : x
  2. Step 2: Convert to fraction form
    445,839.86/615,269.63 = 254,871.02/x
  3. Step 3: Cross multiply
    445,839.86x = 615,269.63 × 254,871.02
  4. Step 4: Simplify right side
    445,839.86x = 156,814,395,733.95
  5. Step 5: Solve for x
    x = 156,814,395,733.95/445,839.86
  6. Step 6: Final answer
    x = 351,728.08

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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.