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Finding the Fourth Proportional to 256,872.70, 354,470.07 and 143,673.58

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Solution

The fourth proportional to 256,872.70, 354,470.07 and 143,673.58 is: 198,261.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,872.70 : 354,470.07 = 143,673.58 : x
  2. Step 2: Convert to fraction form
    256,872.70/354,470.07 = 143,673.58/x
  3. Step 3: Cross multiply
    256,872.70x = 354,470.07 × 143,673.58
  4. Step 4: Simplify right side
    256,872.70x = 50,927,983,959.75
  5. Step 5: Solve for x
    x = 50,927,983,959.75/256,872.70
  6. Step 6: Final answer
    x = 198,261.57

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1.5x scale

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.