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Finding the Fourth Proportional to 615,312.92, 923,381.22 and 215,955.56

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Solution

The fourth proportional to 615,312.92, 923,381.22 and 215,955.56 is: 324,077.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,312.92 : 923,381.22 = 215,955.56 : x
  2. Step 2: Convert to fraction form
    615,312.92/923,381.22 = 215,955.56/x
  3. Step 3: Cross multiply
    615,312.92x = 923,381.22 × 215,955.56
  4. Step 4: Simplify right side
    615,312.92x = 199,409,308,458.58
  5. Step 5: Solve for x
    x = 199,409,308,458.58/615,312.92
  6. Step 6: Final answer
    x = 324,077.88

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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.