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Finding the Fourth Proportional to 248,679, 343,177.06 and 135,501.72

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Solution

The fourth proportional to 248,679, 343,177.06 and 135,501.72 is: 186,992.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,679 : 343,177.06 = 135,501.72 : x
  2. Step 2: Convert to fraction form
    248,679/343,177.06 = 135,501.72/x
  3. Step 3: Cross multiply
    248,679x = 343,177.06 × 135,501.72
  4. Step 4: Simplify right side
    248,679x = 46,501,081,894.54
  5. Step 5: Solve for x
    x = 46,501,081,894.54/248,679
  6. Step 6: Final answer
    x = 186,992.40

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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.