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Finding the Fourth Proportional to 248,275, 342,616.62 and 135,095.80

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Solution

The fourth proportional to 248,275, 342,616.62 and 135,095.80 is: 186,430.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,275 : 342,616.62 = 135,095.80 : x
  2. Step 2: Convert to fraction form
    248,275/342,616.62 = 135,095.80/x
  3. Step 3: Cross multiply
    248,275x = 342,616.62 × 135,095.80
  4. Step 4: Simplify right side
    248,275x = 46,286,066,372.20
  5. Step 5: Solve for x
    x = 46,286,066,372.20/248,275
  6. Step 6: Final answer
    x = 186,430.64

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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.