Home / 261,286.08-391,946.94-103,514.28

Finding the Fourth Proportional to 261,286.08, 391,946.94 and 103,514.28

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Solution

The fourth proportional to 261,286.08, 391,946.94 and 103,514.28 is: 155,278.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,286.08 : 391,946.94 = 103,514.28 : x
  2. Step 2: Convert to fraction form
    261,286.08/391,946.94 = 103,514.28/x
  3. Step 3: Cross multiply
    261,286.08x = 391,946.94 × 103,514.28
  4. Step 4: Simplify right side
    261,286.08x = 40,572,105,292.30
  5. Step 5: Solve for x
    x = 40,572,105,292.30/261,286.08
  6. Step 6: Final answer
    x = 155,278.48

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1.5x scale

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.