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Finding the Fourth Proportional to 248,662.13, 343,153.74 and 135,484.88

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Solution

The fourth proportional to 248,662.13, 343,153.74 and 135,484.88 is: 186,969.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,662.13 : 343,153.74 = 135,484.88 : x
  2. Step 2: Convert to fraction form
    248,662.13/343,153.74 = 135,484.88/x
  3. Step 3: Cross multiply
    248,662.13x = 343,153.74 × 135,484.88
  4. Step 4: Simplify right side
    248,662.13x = 46,492,141,569.68
  5. Step 5: Solve for x
    x = 46,492,141,569.68/248,662.13
  6. Step 6: Final answer
    x = 186,969.13

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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.