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Finding the Fourth Proportional to 256,877.84, 354,490.92 and 143,700.59

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Solution

The fourth proportional to 256,877.84, 354,490.92 and 143,700.59 is: 198,306.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,877.84 : 354,490.92 = 143,700.59 : x
  2. Step 2: Convert to fraction form
    256,877.84/354,490.92 = 143,700.59/x
  3. Step 3: Cross multiply
    256,877.84x = 354,490.92 × 143,700.59
  4. Step 4: Simplify right side
    256,877.84x = 50,940,554,353.64
  5. Step 5: Solve for x
    x = 50,940,554,353.64/256,877.84
  6. Step 6: Final answer
    x = 198,306.53

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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.