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Finding the Fourth Proportional to 220,234.92, 330,376.62 and 70,440

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Solution

The fourth proportional to 220,234.92, 330,376.62 and 70,440 is: 105,667.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,234.92 : 330,376.62 = 70,440 : x
  2. Step 2: Convert to fraction form
    220,234.92/330,376.62 = 70,440/x
  3. Step 3: Cross multiply
    220,234.92x = 330,376.62 × 70,440
  4. Step 4: Simplify right side
    220,234.92x = 23,271,729,112.80
  5. Step 5: Solve for x
    x = 23,271,729,112.80/220,234.92
  6. Step 6: Final answer
    x = 105,667.75

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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.