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Finding the Fourth Proportional to 248,640, 343,125.62 and 141,212.13

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Solution

The fourth proportional to 248,640, 343,125.62 and 141,212.13 is: 194,874.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,640 : 343,125.62 = 141,212.13 : x
  2. Step 2: Convert to fraction form
    248,640/343,125.62 = 141,212.13/x
  3. Step 3: Cross multiply
    248,640x = 343,125.62 × 141,212.13
  4. Step 4: Simplify right side
    248,640x = 48,453,498,951.71
  5. Step 5: Solve for x
    x = 48,453,498,951.71/248,640
  6. Step 6: Final answer
    x = 194,874.11

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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.