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Finding the Fourth Proportional to 318,786.48, 477,557.64 and 248,335.92

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Solution

The fourth proportional to 318,786.48, 477,557.64 and 248,335.92 is: 372,019.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,786.48 : 477,557.64 = 248,335.92 : x
  2. Step 2: Convert to fraction form
    318,786.48/477,557.64 = 248,335.92/x
  3. Step 3: Cross multiply
    318,786.48x = 477,557.64 × 248,335.92
  4. Step 4: Simplify right side
    318,786.48x = 118,594,715,882.43
  5. Step 5: Solve for x
    x = 118,594,715,882.43/318,786.48
  6. Step 6: Final answer
    x = 372,019.28

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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.