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Finding the Fourth Proportional to 218,087.31, 327,130.53 and 68,339.07

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Solution

The fourth proportional to 218,087.31, 327,130.53 and 68,339.07 is: 102,508.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,087.31 : 327,130.53 = 68,339.07 : x
  2. Step 2: Convert to fraction form
    218,087.31/327,130.53 = 68,339.07/x
  3. Step 3: Cross multiply
    218,087.31x = 327,130.53 × 68,339.07
  4. Step 4: Simplify right side
    218,087.31x = 22,355,796,188.81
  5. Step 5: Solve for x
    x = 22,355,796,188.81/218,087.31
  6. Step 6: Final answer
    x = 102,508.47

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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.