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Finding the Fourth Proportional to 248,193.88, 342,490.32 and 140,765.20

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Solution

The fourth proportional to 248,193.88, 342,490.32 and 140,765.20 is: 194,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,193.88 : 342,490.32 = 140,765.20 : x
  2. Step 2: Convert to fraction form
    248,193.88/342,490.32 = 140,765.20/x
  3. Step 3: Cross multiply
    248,193.88x = 342,490.32 × 140,765.20
  4. Step 4: Simplify right side
    248,193.88x = 48,210,718,392.86
  5. Step 5: Solve for x
    x = 48,210,718,392.86/248,193.88
  6. Step 6: Final answer
    x = 194,246.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.