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Finding the Fourth Proportional to 248,734.80, 343,213.20 and 153,235.80

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Solution

The fourth proportional to 248,734.80, 343,213.20 and 153,235.80 is: 211,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,734.80 : 343,213.20 = 153,235.80 : x
  2. Step 2: Convert to fraction form
    248,734.80/343,213.20 = 153,235.80/x
  3. Step 3: Cross multiply
    248,734.80x = 343,213.20 × 153,235.80
  4. Step 4: Simplify right side
    248,734.80x = 52,592,549,272.56
  5. Step 5: Solve for x
    x = 52,592,549,272.56/248,734.80
  6. Step 6: Final answer
    x = 211,440.25

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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.