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Finding the Fourth Proportional to 383,255.46, 528,908.88 and 213,489.66

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Solution

The fourth proportional to 383,255.46, 528,908.88 and 213,489.66 is: 294,624.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,255.46 : 528,908.88 = 213,489.66 : x
  2. Step 2: Convert to fraction form
    383,255.46/528,908.88 = 213,489.66/x
  3. Step 3: Cross multiply
    383,255.46x = 528,908.88 × 213,489.66
  4. Step 4: Simplify right side
    383,255.46x = 112,916,576,962.18
  5. Step 5: Solve for x
    x = 112,916,576,962.18/383,255.46
  6. Step 6: Final answer
    x = 294,624.84

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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.