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Finding the Fourth Proportional to 259,428.96, 389,154 and 117,246.96

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Solution

The fourth proportional to 259,428.96, 389,154 and 117,246.96 is: 175,875.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,428.96 : 389,154 = 117,246.96 : x
  2. Step 2: Convert to fraction form
    259,428.96/389,154 = 117,246.96/x
  3. Step 3: Cross multiply
    259,428.96x = 389,154 × 117,246.96
  4. Step 4: Simplify right side
    259,428.96x = 45,627,123,471.84
  5. Step 5: Solve for x
    x = 45,627,123,471.84/259,428.96
  6. Step 6: Final answer
    x = 175,875.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.