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Finding the Fourth Proportional to 248,679.65, 343,180.50 and 135,502.40

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Solution

The fourth proportional to 248,679.65, 343,180.50 and 135,502.40 is: 186,994.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,679.65 : 343,180.50 = 135,502.40 : x
  2. Step 2: Convert to fraction form
    248,679.65/343,180.50 = 135,502.40/x
  3. Step 3: Cross multiply
    248,679.65x = 343,180.50 × 135,502.40
  4. Step 4: Simplify right side
    248,679.65x = 46,501,781,733.02
  5. Step 5: Solve for x
    x = 46,501,781,733.02/248,679.65
  6. Step 6: Final answer
    x = 186,994.72

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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.