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Finding the Fourth Proportional to 615,606.40, 923,292.96 and 216,153.28

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Solution

The fourth proportional to 615,606.40, 923,292.96 and 216,153.28 is: 324,188.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,606.40 : 923,292.96 = 216,153.28 : x
  2. Step 2: Convert to fraction form
    615,606.40/923,292.96 = 216,153.28/x
  3. Step 3: Cross multiply
    615,606.40x = 923,292.96 × 216,153.28
  4. Step 4: Simplify right side
    615,606.40x = 199,572,801,704.91
  5. Step 5: Solve for x
    x = 199,572,801,704.91/615,606.40
  6. Step 6: Final answer
    x = 324,188.97

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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.