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Finding the Fourth Proportional to 248,809.56, 343,357.20 and 135,632.40

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Solution

The fourth proportional to 248,809.56, 343,357.20 and 135,632.40 is: 187,172.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,809.56 : 343,357.20 = 135,632.40 : x
  2. Step 2: Convert to fraction form
    248,809.56/343,357.20 = 135,632.40/x
  3. Step 3: Cross multiply
    248,809.56x = 343,357.20 × 135,632.40
  4. Step 4: Simplify right side
    248,809.56x = 46,570,361,093.28
  5. Step 5: Solve for x
    x = 46,570,361,093.28/248,809.56
  6. Step 6: Final answer
    x = 187,172.72

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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.