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Finding the Fourth Proportional to 230,660.78, 345,989.10 and 72,889.26

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Solution

The fourth proportional to 230,660.78, 345,989.10 and 72,889.26 is: 109,333.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,660.78 : 345,989.10 = 72,889.26 : x
  2. Step 2: Convert to fraction form
    230,660.78/345,989.10 = 72,889.26/x
  3. Step 3: Cross multiply
    230,660.78x = 345,989.10 × 72,889.26
  4. Step 4: Simplify right side
    230,660.78x = 25,218,889,467.07
  5. Step 5: Solve for x
    x = 25,218,889,467.07/230,660.78
  6. Step 6: Final answer
    x = 109,333.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.