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Finding the Fourth Proportional to 248,534.40, 342,977.92 and 135,357.76

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Solution

The fourth proportional to 248,534.40, 342,977.92 and 135,357.76 is: 186,793.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,534.40 : 342,977.92 = 135,357.76 : x
  2. Step 2: Convert to fraction form
    248,534.40/342,977.92 = 135,357.76/x
  3. Step 3: Cross multiply
    248,534.40x = 342,977.92 × 135,357.76
  4. Step 4: Simplify right side
    248,534.40x = 46,424,722,980.66
  5. Step 5: Solve for x
    x = 46,424,722,980.66/248,534.40
  6. Step 6: Final answer
    x = 186,793.95

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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.