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Finding the Fourth Proportional to 615,815.40, 923,492.70 and 216,301.80

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Solution

The fourth proportional to 615,815.40, 923,492.70 and 216,301.80 is: 324,371.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,815.40 : 923,492.70 = 216,301.80 : x
  2. Step 2: Convert to fraction form
    615,815.40/923,492.70 = 216,301.80/x
  3. Step 3: Cross multiply
    615,815.40x = 923,492.70 × 216,301.80
  4. Step 4: Simplify right side
    615,815.40x = 199,753,133,296.86
  5. Step 5: Solve for x
    x = 199,753,133,296.86/615,815.40
  6. Step 6: Final answer
    x = 324,371.77

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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.