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Finding the Fourth Proportional to 248,400.28, 342,792.36 and 135,223

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Solution

The fourth proportional to 248,400.28, 342,792.36 and 135,223 is: 186,607.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,400.28 : 342,792.36 = 135,223 : x
  2. Step 2: Convert to fraction form
    248,400.28/342,792.36 = 135,223/x
  3. Step 3: Cross multiply
    248,400.28x = 342,792.36 × 135,223
  4. Step 4: Simplify right side
    248,400.28x = 46,353,411,296.28
  5. Step 5: Solve for x
    x = 46,353,411,296.28/248,400.28
  6. Step 6: Final answer
    x = 186,607.73

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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.