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Finding the Fourth Proportional to 202,217.80, 303,326.70 and 69,078.10

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Solution

The fourth proportional to 202,217.80, 303,326.70 and 69,078.10 is: 103,617.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,217.80 : 303,326.70 = 69,078.10 : x
  2. Step 2: Convert to fraction form
    202,217.80/303,326.70 = 69,078.10/x
  3. Step 3: Cross multiply
    202,217.80x = 303,326.70 × 69,078.10
  4. Step 4: Simplify right side
    202,217.80x = 20,953,232,115.27
  5. Step 5: Solve for x
    x = 20,953,232,115.27/202,217.80
  6. Step 6: Final answer
    x = 103,617.15

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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.