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Finding the Fourth Proportional to 487,865.78, 673,262.74 and 267,099.38

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Solution

The fourth proportional to 487,865.78, 673,262.74 and 267,099.38 is: 368,601.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,865.78 : 673,262.74 = 267,099.38 : x
  2. Step 2: Convert to fraction form
    487,865.78/673,262.74 = 267,099.38/x
  3. Step 3: Cross multiply
    487,865.78x = 673,262.74 × 267,099.38
  4. Step 4: Simplify right side
    487,865.78x = 179,828,062,448.13
  5. Step 5: Solve for x
    x = 179,828,062,448.13/487,865.78
  6. Step 6: Final answer
    x = 368,601.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.