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Finding the Fourth Proportional to 615,515, 923,392.20 and 236,408

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Solution

The fourth proportional to 615,515, 923,392.20 and 236,408 is: 354,657.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,515 : 923,392.20 = 236,408 : x
  2. Step 2: Convert to fraction form
    615,515/923,392.20 = 236,408/x
  3. Step 3: Cross multiply
    615,515x = 923,392.20 × 236,408
  4. Step 4: Simplify right side
    615,515x = 218,297,303,217.60
  5. Step 5: Solve for x
    x = 218,297,303,217.60/615,515
  6. Step 6: Final answer
    x = 354,657.97

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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.