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Finding the Fourth Proportional to 258,419.76, 356,610.96 and 143,697.84

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Solution

The fourth proportional to 258,419.76, 356,610.96 and 143,697.84 is: 198,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,419.76 : 356,610.96 = 143,697.84 : x
  2. Step 2: Convert to fraction form
    258,419.76/356,610.96 = 143,697.84/x
  3. Step 3: Cross multiply
    258,419.76x = 356,610.96 × 143,697.84
  4. Step 4: Simplify right side
    258,419.76x = 51,244,224,672.33
  5. Step 5: Solve for x
    x = 51,244,224,672.33/258,419.76
  6. Step 6: Final answer
    x = 198,298.40

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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.