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Finding the Fourth Proportional to 188,330.40, 282,463.20 and 69,940.80

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Solution

The fourth proportional to 188,330.40, 282,463.20 and 69,940.80 is: 104,899.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,330.40 : 282,463.20 = 69,940.80 : x
  2. Step 2: Convert to fraction form
    188,330.40/282,463.20 = 69,940.80/x
  3. Step 3: Cross multiply
    188,330.40x = 282,463.20 × 69,940.80
  4. Step 4: Simplify right side
    188,330.40x = 19,755,702,178.56
  5. Step 5: Solve for x
    x = 19,755,702,178.56/188,330.40
  6. Step 6: Final answer
    x = 104,899.17

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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.