Home / 457,928.97-687,038.31-205,426.05

Finding the Fourth Proportional to 457,928.97, 687,038.31 and 205,426.05

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Solution

The fourth proportional to 457,928.97, 687,038.31 and 205,426.05 is: 308,204.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,928.97 : 687,038.31 = 205,426.05 : x
  2. Step 2: Convert to fraction form
    457,928.97/687,038.31 = 205,426.05/x
  3. Step 3: Cross multiply
    457,928.97x = 687,038.31 × 205,426.05
  4. Step 4: Simplify right side
    457,928.97x = 141,135,566,221.98
  5. Step 5: Solve for x
    x = 141,135,566,221.98/457,928.97
  6. Step 6: Final answer
    x = 308,204.06

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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.