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Finding the Fourth Proportional to 351,575.46, 485,169.89 and 213,708.71

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Solution

The fourth proportional to 351,575.46, 485,169.89 and 213,708.71 is: 294,915.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,575.46 : 485,169.89 = 213,708.71 : x
  2. Step 2: Convert to fraction form
    351,575.46/485,169.89 = 213,708.71/x
  3. Step 3: Cross multiply
    351,575.46x = 485,169.89 × 213,708.71
  4. Step 4: Simplify right side
    351,575.46x = 103,685,032,880.42
  5. Step 5: Solve for x
    x = 103,685,032,880.42/351,575.46
  6. Step 6: Final answer
    x = 294,915.45

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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.