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Finding the Fourth Proportional to 251,956.66, 347,674.96 and 155,145

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Solution

The fourth proportional to 251,956.66, 347,674.96 and 155,145 is: 214,084.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,956.66 : 347,674.96 = 155,145 : x
  2. Step 2: Convert to fraction form
    251,956.66/347,674.96 = 155,145/x
  3. Step 3: Cross multiply
    251,956.66x = 347,674.96 × 155,145
  4. Step 4: Simplify right side
    251,956.66x = 53,940,031,669.20
  5. Step 5: Solve for x
    x = 53,940,031,669.20/251,956.66
  6. Step 6: Final answer
    x = 214,084.56

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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.