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Finding the Fourth Proportional to 248,385.78, 342,770.67 and 135,208.26

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Solution

The fourth proportional to 248,385.78, 342,770.67 and 135,208.26 is: 186,586.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,385.78 : 342,770.67 = 135,208.26 : x
  2. Step 2: Convert to fraction form
    248,385.78/342,770.67 = 135,208.26/x
  3. Step 3: Cross multiply
    248,385.78x = 342,770.67 × 135,208.26
  4. Step 4: Simplify right side
    248,385.78x = 46,345,425,869.73
  5. Step 5: Solve for x
    x = 46,345,425,869.73/248,385.78
  6. Step 6: Final answer
    x = 186,586.47

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1.5x scale

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.