Home / 389,917.80-584,876.70-256,948.20

Finding the Fourth Proportional to 389,917.80, 584,876.70 and 256,948.20

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Solution

The fourth proportional to 389,917.80, 584,876.70 and 256,948.20 is: 385,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,917.80 : 584,876.70 = 256,948.20 : x
  2. Step 2: Convert to fraction form
    389,917.80/584,876.70 = 256,948.20/x
  3. Step 3: Cross multiply
    389,917.80x = 584,876.70 × 256,948.20
  4. Step 4: Simplify right side
    389,917.80x = 150,283,015,286.94
  5. Step 5: Solve for x
    x = 150,283,015,286.94/389,917.80
  6. Step 6: Final answer
    x = 385,422.30

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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.