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Finding the Fourth Proportional to 218,616.02, 327,970.11 and 70,860.50

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Solution

The fourth proportional to 218,616.02, 327,970.11 and 70,860.50 is: 106,305.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,616.02 : 327,970.11 = 70,860.50 : x
  2. Step 2: Convert to fraction form
    218,616.02/327,970.11 = 70,860.50/x
  3. Step 3: Cross multiply
    218,616.02x = 327,970.11 × 70,860.50
  4. Step 4: Simplify right side
    218,616.02x = 23,240,125,979.66
  5. Step 5: Solve for x
    x = 23,240,125,979.66/218,616.02
  6. Step 6: Final answer
    x = 106,305.69

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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.