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Finding the Fourth Proportional to 615,503, 923,374.20 and 236,396

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Solution

The fourth proportional to 615,503, 923,374.20 and 236,396 is: 354,639.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,503 : 923,374.20 = 236,396 : x
  2. Step 2: Convert to fraction form
    615,503/923,374.20 = 236,396/x
  3. Step 3: Cross multiply
    615,503x = 923,374.20 × 236,396
  4. Step 4: Simplify right side
    615,503x = 218,281,967,383.20
  5. Step 5: Solve for x
    x = 218,281,967,383.20/615,503
  6. Step 6: Final answer
    x = 354,639.97

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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.