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Finding the Fourth Proportional to 202,421.69, 303,300.20 and 69,229.28

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Solution

The fourth proportional to 202,421.69, 303,300.20 and 69,229.28 is: 103,730.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,421.69 : 303,300.20 = 69,229.28 : x
  2. Step 2: Convert to fraction form
    202,421.69/303,300.20 = 69,229.28/x
  3. Step 3: Cross multiply
    202,421.69x = 303,300.20 × 69,229.28
  4. Step 4: Simplify right side
    202,421.69x = 20,997,252,607.21
  5. Step 5: Solve for x
    x = 20,997,252,607.21/202,421.69
  6. Step 6: Final answer
    x = 103,730.25

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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.