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Finding the Fourth Proportional to 398,785.94, 550,305.18 and 237,637.40

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Solution

The fourth proportional to 398,785.94, 550,305.18 and 237,637.40 is: 327,928.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,785.94 : 550,305.18 = 237,637.40 : x
  2. Step 2: Convert to fraction form
    398,785.94/550,305.18 = 237,637.40/x
  3. Step 3: Cross multiply
    398,785.94x = 550,305.18 × 237,637.40
  4. Step 4: Simplify right side
    398,785.94x = 130,773,092,181.73
  5. Step 5: Solve for x
    x = 130,773,092,181.73/398,785.94
  6. Step 6: Final answer
    x = 327,928.04

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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.