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Finding the Fourth Proportional to 248,432.80, 372,620.40 and 70,967.20

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Solution

The fourth proportional to 248,432.80, 372,620.40 and 70,967.20 is: 106,442.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,432.80 : 372,620.40 = 70,967.20 : x
  2. Step 2: Convert to fraction form
    248,432.80/372,620.40 = 70,967.20/x
  3. Step 3: Cross multiply
    248,432.80x = 372,620.40 × 70,967.20
  4. Step 4: Simplify right side
    248,432.80x = 26,443,826,450.88
  5. Step 5: Solve for x
    x = 26,443,826,450.88/248,432.80
  6. Step 6: Final answer
    x = 106,442.57

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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.