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Finding the Fourth Proportional to 215,476.65, 323,270.55 and 103,243.47

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Solution

The fourth proportional to 215,476.65, 323,270.55 and 103,243.47 is: 154,891.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,476.65 : 323,270.55 = 103,243.47 : x
  2. Step 2: Convert to fraction form
    215,476.65/323,270.55 = 103,243.47/x
  3. Step 3: Cross multiply
    215,476.65x = 323,270.55 × 103,243.47
  4. Step 4: Simplify right side
    215,476.65x = 33,375,573,330.81
  5. Step 5: Solve for x
    x = 33,375,573,330.81/215,476.65
  6. Step 6: Final answer
    x = 154,891.83

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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.