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Finding the Fourth Proportional to 388,760.55, 536,494.92 and 216,673.71

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Solution

The fourth proportional to 388,760.55, 536,494.92 and 216,673.71 is: 299,012.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,760.55 : 536,494.92 = 216,673.71 : x
  2. Step 2: Convert to fraction form
    388,760.55/536,494.92 = 216,673.71/x
  3. Step 3: Cross multiply
    388,760.55x = 536,494.92 × 216,673.71
  4. Step 4: Simplify right side
    388,760.55x = 116,244,344,712.55
  5. Step 5: Solve for x
    x = 116,244,344,712.55/388,760.55
  6. Step 6: Final answer
    x = 299,012.71

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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.