Home / 287,249.78-396,417-159,925.38

Finding the Fourth Proportional to 287,249.78, 396,417 and 159,925.38

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Solution

The fourth proportional to 287,249.78, 396,417 and 159,925.38 is: 220,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,249.78 : 396,417 = 159,925.38 : x
  2. Step 2: Convert to fraction form
    287,249.78/396,417 = 159,925.38/x
  3. Step 3: Cross multiply
    287,249.78x = 396,417 × 159,925.38
  4. Step 4: Simplify right side
    287,249.78x = 63,397,139,363.46
  5. Step 5: Solve for x
    x = 63,397,139,363.46/287,249.78
  6. Step 6: Final answer
    x = 220,703.87

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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.