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Finding the Fourth Proportional to 223,915.08, 308,988.81 and 123,313.08

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Solution

The fourth proportional to 223,915.08, 308,988.81 and 123,313.08 is: 170,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,915.08 : 308,988.81 = 123,313.08 : x
  2. Step 2: Convert to fraction form
    223,915.08/308,988.81 = 123,313.08/x
  3. Step 3: Cross multiply
    223,915.08x = 308,988.81 × 123,313.08
  4. Step 4: Simplify right side
    223,915.08x = 38,102,361,846.63
  5. Step 5: Solve for x
    x = 38,102,361,846.63/223,915.08
  6. Step 6: Final answer
    x = 170,164.34

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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.