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Finding the Fourth Proportional to 615,956.24, 923,960.28 and 211,427.12

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Solution

The fourth proportional to 615,956.24, 923,960.28 and 211,427.12 is: 317,149.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,956.24 : 923,960.28 = 211,427.12 : x
  2. Step 2: Convert to fraction form
    615,956.24/923,960.28 = 211,427.12/x
  3. Step 3: Cross multiply
    615,956.24x = 923,960.28 × 211,427.12
  4. Step 4: Simplify right side
    615,956.24x = 195,350,260,994.79
  5. Step 5: Solve for x
    x = 195,350,260,994.79/615,956.24
  6. Step 6: Final answer
    x = 317,149.58

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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.