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Finding the Fourth Proportional to 202,423.69, 303,303.19 and 69,231.28

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Solution

The fourth proportional to 202,423.69, 303,303.19 and 69,231.28 is: 103,733.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,423.69 : 303,303.19 = 69,231.28 : x
  2. Step 2: Convert to fraction form
    202,423.69/303,303.19 = 69,231.28/x
  3. Step 3: Cross multiply
    202,423.69x = 303,303.19 × 69,231.28
  4. Step 4: Simplify right side
    202,423.69x = 20,998,068,071.78
  5. Step 5: Solve for x
    x = 20,998,068,071.78/202,423.69
  6. Step 6: Final answer
    x = 103,733.25

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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.