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Finding the Fourth Proportional to 223,915.39, 308,989.23 and 123,313.39

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Solution

The fourth proportional to 223,915.39, 308,989.23 and 123,313.39 is: 170,164.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,915.39 : 308,989.23 = 123,313.39 : x
  2. Step 2: Convert to fraction form
    223,915.39/308,989.23 = 123,313.39/x
  3. Step 3: Cross multiply
    223,915.39x = 308,989.23 × 123,313.39
  4. Step 4: Simplify right side
    223,915.39x = 38,102,509,424.79
  5. Step 5: Solve for x
    x = 38,102,509,424.79/223,915.39
  6. Step 6: Final answer
    x = 170,164.76

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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.