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Finding the Fourth Proportional to 318,772, 439,905.36 and 175,531.74

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Solution

The fourth proportional to 318,772, 439,905.36 and 175,531.74 is: 242,233.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,772 : 439,905.36 = 175,531.74 : x
  2. Step 2: Convert to fraction form
    318,772/439,905.36 = 175,531.74/x
  3. Step 3: Cross multiply
    318,772x = 439,905.36 × 175,531.74
  4. Step 4: Simplify right side
    318,772x = 77,217,351,076.60
  5. Step 5: Solve for x
    x = 77,217,351,076.60/318,772
  6. Step 6: Final answer
    x = 242,233.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.