Home / 256,988.20-385,344.06-79,418.92

Finding the Fourth Proportional to 256,988.20, 385,344.06 and 79,418.92

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Solution

The fourth proportional to 256,988.20, 385,344.06 and 79,418.92 is: 119,085.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,988.20 : 385,344.06 = 79,418.92 : x
  2. Step 2: Convert to fraction form
    256,988.20/385,344.06 = 79,418.92/x
  3. Step 3: Cross multiply
    256,988.20x = 385,344.06 × 79,418.92
  4. Step 4: Simplify right side
    256,988.20x = 30,603,609,073.62
  5. Step 5: Solve for x
    x = 30,603,609,073.62/256,988.20
  6. Step 6: Final answer
    x = 119,085.66

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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.