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Finding the Fourth Proportional to 256,998.22, 354,669.13 and 143,820.97

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Solution

The fourth proportional to 256,998.22, 354,669.13 and 143,820.97 is: 198,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,998.22 : 354,669.13 = 143,820.97 : x
  2. Step 2: Convert to fraction form
    256,998.22/354,669.13 = 143,820.97/x
  3. Step 3: Cross multiply
    256,998.22x = 354,669.13 × 143,820.97
  4. Step 4: Simplify right side
    256,998.22x = 51,008,857,598.76
  5. Step 5: Solve for x
    x = 51,008,857,598.76/256,998.22
  6. Step 6: Final answer
    x = 198,479.42

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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.