Home / 457,930.97-687,041.31-205,428.05

Finding the Fourth Proportional to 457,930.97, 687,041.31 and 205,428.05

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Solution

The fourth proportional to 457,930.97, 687,041.31 and 205,428.05 is: 308,207.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,930.97 : 687,041.31 = 205,428.05 : x
  2. Step 2: Convert to fraction form
    457,930.97/687,041.31 = 205,428.05/x
  3. Step 3: Cross multiply
    457,930.97x = 687,041.31 × 205,428.05
  4. Step 4: Simplify right side
    457,930.97x = 141,137,556,582.75
  5. Step 5: Solve for x
    x = 141,137,556,582.75/457,930.97
  6. Step 6: Final answer
    x = 308,207.06

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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.