Home / 389,946.60-584,919.90-256,102.20

Finding the Fourth Proportional to 389,946.60, 584,919.90 and 256,102.20

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Solution

The fourth proportional to 389,946.60, 584,919.90 and 256,102.20 is: 384,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,946.60 : 584,919.90 = 256,102.20 : x
  2. Step 2: Convert to fraction form
    389,946.60/584,919.90 = 256,102.20/x
  3. Step 3: Cross multiply
    389,946.60x = 584,919.90 × 256,102.20
  4. Step 4: Simplify right side
    389,946.60x = 149,799,273,213.78
  5. Step 5: Solve for x
    x = 149,799,273,213.78/389,946.60
  6. Step 6: Final answer
    x = 384,153.30

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Similar ratio
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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.