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Finding the Fourth Proportional to 248,636.75, 343,119.11 and 141,206.72

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Solution

The fourth proportional to 248,636.75, 343,119.11 and 141,206.72 is: 194,865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,636.75 : 343,119.11 = 141,206.72 : x
  2. Step 2: Convert to fraction form
    248,636.75/343,119.11 = 141,206.72/x
  3. Step 3: Cross multiply
    248,636.75x = 343,119.11 × 141,206.72
  4. Step 4: Simplify right side
    248,636.75x = 48,450,721,670.79
  5. Step 5: Solve for x
    x = 48,450,721,670.79/248,636.75
  6. Step 6: Final answer
    x = 194,865.49

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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.