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Finding the Fourth Proportional to 202,281.70, 303,422.55 and 69,166.30

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Solution

The fourth proportional to 202,281.70, 303,422.55 and 69,166.30 is: 103,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,281.70 : 303,422.55 = 69,166.30 : x
  2. Step 2: Convert to fraction form
    202,281.70/303,422.55 = 69,166.30/x
  3. Step 3: Cross multiply
    202,281.70x = 303,422.55 × 69,166.30
  4. Step 4: Simplify right side
    202,281.70x = 20,986,615,120.07
  5. Step 5: Solve for x
    x = 20,986,615,120.07/202,281.70
  6. Step 6: Final answer
    x = 103,749.45

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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.