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Finding the Fourth Proportional to 248,208.60, 372,331.62 and 77,408.76

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Solution

The fourth proportional to 248,208.60, 372,331.62 and 77,408.76 is: 116,118.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,208.60 : 372,331.62 = 77,408.76 : x
  2. Step 2: Convert to fraction form
    248,208.60/372,331.62 = 77,408.76/x
  3. Step 3: Cross multiply
    248,208.60x = 372,331.62 × 77,408.76
  4. Step 4: Simplify right side
    248,208.60x = 28,821,729,012.99
  5. Step 5: Solve for x
    x = 28,821,729,012.99/248,208.60
  6. Step 6: Final answer
    x = 116,118.98

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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.