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Finding the Fourth Proportional to 256,551.21, 354,041.21 and 143,373.96

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Solution

The fourth proportional to 256,551.21, 354,041.21 and 143,373.96 is: 197,856.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,551.21 : 354,041.21 = 143,373.96 : x
  2. Step 2: Convert to fraction form
    256,551.21/354,041.21 = 143,373.96/x
  3. Step 3: Cross multiply
    256,551.21x = 354,041.21 × 143,373.96
  4. Step 4: Simplify right side
    256,551.21x = 50,760,290,639.33
  5. Step 5: Solve for x
    x = 50,760,290,639.33/256,551.21
  6. Step 6: Final answer
    x = 197,856.37

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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.