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Finding the Fourth Proportional to 256,607.80, 354,109.24 and 143,432.44

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Solution

The fourth proportional to 256,607.80, 354,109.24 and 143,432.44 is: 197,931.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,607.80 : 354,109.24 = 143,432.44 : x
  2. Step 2: Convert to fraction form
    256,607.80/354,109.24 = 143,432.44/x
  3. Step 3: Cross multiply
    256,607.80x = 354,109.24 × 143,432.44
  4. Step 4: Simplify right side
    256,607.80x = 50,790,752,319.75
  5. Step 5: Solve for x
    x = 50,790,752,319.75/256,607.80
  6. Step 6: Final answer
    x = 197,931.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.