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Finding the Fourth Proportional to 288,907, 398,746.74 and 193,579.96

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Solution

The fourth proportional to 288,907, 398,746.74 and 193,579.96 is: 267,177.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,907 : 398,746.74 = 193,579.96 : x
  2. Step 2: Convert to fraction form
    288,907/398,746.74 = 193,579.96/x
  3. Step 3: Cross multiply
    288,907x = 398,746.74 × 193,579.96
  4. Step 4: Simplify right side
    288,907x = 77,189,377,979.33
  5. Step 5: Solve for x
    x = 77,189,377,979.33/288,907
  6. Step 6: Final answer
    x = 267,177.25

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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.