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Finding the Fourth Proportional to 395,499.93, 593,338.02 and 217,915.53

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Solution

The fourth proportional to 395,499.93, 593,338.02 and 217,915.53 is: 326,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,499.93 : 593,338.02 = 217,915.53 : x
  2. Step 2: Convert to fraction form
    395,499.93/593,338.02 = 217,915.53/x
  3. Step 3: Cross multiply
    395,499.93x = 593,338.02 × 217,915.53
  4. Step 4: Simplify right side
    395,499.93x = 129,297,569,097.45
  5. Step 5: Solve for x
    x = 129,297,569,097.45/395,499.93
  6. Step 6: Final answer
    x = 326,921.85

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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.