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Finding the Fourth Proportional to 256,462.20, 384,002.10 and 185,959.80

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Solution

The fourth proportional to 256,462.20, 384,002.10 and 185,959.80 is: 278,438.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,462.20 : 384,002.10 = 185,959.80 : x
  2. Step 2: Convert to fraction form
    256,462.20/384,002.10 = 185,959.80/x
  3. Step 3: Cross multiply
    256,462.20x = 384,002.10 × 185,959.80
  4. Step 4: Simplify right side
    256,462.20x = 71,408,953,715.58
  5. Step 5: Solve for x
    x = 71,408,953,715.58/256,462.20
  6. Step 6: Final answer
    x = 278,438.51

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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.