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Finding the Fourth Proportional to 230,440.68, 345,721.50 and 72,674.28

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Solution

The fourth proportional to 230,440.68, 345,721.50 and 72,674.28 is: 109,030.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,440.68 : 345,721.50 = 72,674.28 : x
  2. Step 2: Convert to fraction form
    230,440.68/345,721.50 = 72,674.28/x
  3. Step 3: Cross multiply
    230,440.68x = 345,721.50 × 72,674.28
  4. Step 4: Simplify right side
    230,440.68x = 25,125,061,093.02
  5. Step 5: Solve for x
    x = 25,125,061,093.02/230,440.68
  6. Step 6: Final answer
    x = 109,030.49

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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.