Home / 287,614.05-431,550.68-137,796.45

Finding the Fourth Proportional to 287,614.05, 431,550.68 and 137,796.45

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Solution

The fourth proportional to 287,614.05, 431,550.68 and 137,796.45 is: 206,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,614.05 : 431,550.68 = 137,796.45 : x
  2. Step 2: Convert to fraction form
    287,614.05/431,550.68 = 137,796.45/x
  3. Step 3: Cross multiply
    287,614.05x = 431,550.68 × 137,796.45
  4. Step 4: Simplify right side
    287,614.05x = 59,466,151,010.10
  5. Step 5: Solve for x
    x = 59,466,151,010.10/287,614.05
  6. Step 6: Final answer
    x = 206,756.77

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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.