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Finding the Fourth Proportional to 389,251.60, 584,107.80 and 256,515.60

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Solution

The fourth proportional to 389,251.60, 584,107.80 and 256,515.60 is: 384,925.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,251.60 : 584,107.80 = 256,515.60 : x
  2. Step 2: Convert to fraction form
    389,251.60/584,107.80 = 256,515.60/x
  3. Step 3: Cross multiply
    389,251.60x = 584,107.80 × 256,515.60
  4. Step 4: Simplify right side
    389,251.60x = 149,832,762,781.68
  5. Step 5: Solve for x
    x = 149,832,762,781.68/389,251.60
  6. Step 6: Final answer
    x = 384,925.23

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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.