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Finding the Fourth Proportional to 256,890.96, 354,510.48 and 143,713.68

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Solution

The fourth proportional to 256,890.96, 354,510.48 and 143,713.68 is: 198,325.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,890.96 : 354,510.48 = 143,713.68 : x
  2. Step 2: Convert to fraction form
    256,890.96/354,510.48 = 143,713.68/x
  3. Step 3: Cross multiply
    256,890.96x = 354,510.48 × 143,713.68
  4. Step 4: Simplify right side
    256,890.96x = 50,948,005,679.37
  5. Step 5: Solve for x
    x = 50,948,005,679.37/256,890.96
  6. Step 6: Final answer
    x = 198,325.41

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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.