Home / 286,721.24-395,685.45-157,669.56

Finding the Fourth Proportional to 286,721.24, 395,685.45 and 157,669.56

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Solution

The fourth proportional to 286,721.24, 395,685.45 and 157,669.56 is: 217,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,721.24 : 395,685.45 = 157,669.56 : x
  2. Step 2: Convert to fraction form
    286,721.24/395,685.45 = 157,669.56/x
  3. Step 3: Cross multiply
    286,721.24x = 395,685.45 × 157,669.56
  4. Step 4: Simplify right side
    286,721.24x = 62,387,550,799.90
  5. Step 5: Solve for x
    x = 62,387,550,799.90/286,721.24
  6. Step 6: Final answer
    x = 217,589.57

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1.5x scale

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.