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Finding the Fourth Proportional to 270,285.28, 405,428.40 and 83,295.52

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Solution

The fourth proportional to 270,285.28, 405,428.40 and 83,295.52 is: 124,943.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,285.28 : 405,428.40 = 83,295.52 : x
  2. Step 2: Convert to fraction form
    270,285.28/405,428.40 = 83,295.52/x
  3. Step 3: Cross multiply
    270,285.28x = 405,428.40 × 83,295.52
  4. Step 4: Simplify right side
    270,285.28x = 33,770,369,400.77
  5. Step 5: Solve for x
    x = 33,770,369,400.77/270,285.28
  6. Step 6: Final answer
    x = 124,943.43

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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.