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Finding the Fourth Proportional to 445,790.32, 615,190.65 and 254,807.81

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Solution

The fourth proportional to 445,790.32, 615,190.65 and 254,807.81 is: 351,634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,790.32 : 615,190.65 = 254,807.81 : x
  2. Step 2: Convert to fraction form
    445,790.32/615,190.65 = 254,807.81/x
  3. Step 3: Cross multiply
    445,790.32x = 615,190.65 × 254,807.81
  4. Step 4: Simplify right side
    445,790.32x = 156,755,380,534.46
  5. Step 5: Solve for x
    x = 156,755,380,534.46/445,790.32
  6. Step 6: Final answer
    x = 351,634.78

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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.