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Finding the Fourth Proportional to 248,112.60, 371,986.65 and 98,278.80

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Solution

The fourth proportional to 248,112.60, 371,986.65 and 98,278.80 is: 147,346.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,112.60 : 371,986.65 = 98,278.80 : x
  2. Step 2: Convert to fraction form
    248,112.60/371,986.65 = 98,278.80/x
  3. Step 3: Cross multiply
    248,112.60x = 371,986.65 × 98,278.80
  4. Step 4: Simplify right side
    248,112.60x = 36,558,401,578.02
  5. Step 5: Solve for x
    x = 36,558,401,578.02/248,112.60
  6. Step 6: Final answer
    x = 147,346.01

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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.