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Finding the Fourth Proportional to 248,013.88, 372,079.14 and 77,227.72

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Solution

The fourth proportional to 248,013.88, 372,079.14 and 77,227.72 is: 115,859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,013.88 : 372,079.14 = 77,227.72 : x
  2. Step 2: Convert to fraction form
    248,013.88/372,079.14 = 77,227.72/x
  3. Step 3: Cross multiply
    248,013.88x = 372,079.14 × 77,227.72
  4. Step 4: Simplify right side
    248,013.88x = 28,734,823,641.76
  5. Step 5: Solve for x
    x = 28,734,823,641.76/248,013.88
  6. Step 6: Final answer
    x = 115,859.74

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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.