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Finding the Fourth Proportional to 234,180.50, 351,270.75 and 86,436.50

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Solution

The fourth proportional to 234,180.50, 351,270.75 and 86,436.50 is: 129,654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,180.50 : 351,270.75 = 86,436.50 : x
  2. Step 2: Convert to fraction form
    234,180.50/351,270.75 = 86,436.50/x
  3. Step 3: Cross multiply
    234,180.50x = 351,270.75 × 86,436.50
  4. Step 4: Simplify right side
    234,180.50x = 30,362,614,182.38
  5. Step 5: Solve for x
    x = 30,362,614,182.38/234,180.50
  6. Step 6: Final answer
    x = 129,654.75

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1.5x scale

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.