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Finding the Fourth Proportional to 248,488.80, 372,704.40 and 71,023.20

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Solution

The fourth proportional to 248,488.80, 372,704.40 and 71,023.20 is: 106,526.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,488.80 : 372,704.40 = 71,023.20 : x
  2. Step 2: Convert to fraction form
    248,488.80/372,704.40 = 71,023.20/x
  3. Step 3: Cross multiply
    248,488.80x = 372,704.40 × 71,023.20
  4. Step 4: Simplify right side
    248,488.80x = 26,470,659,142.08
  5. Step 5: Solve for x
    x = 26,470,659,142.08/248,488.80
  6. Step 6: Final answer
    x = 106,526.57

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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.