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Finding the Fourth Proportional to 388,760.38, 536,491.82 and 216,689.27

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Solution

The fourth proportional to 388,760.38, 536,491.82 and 216,689.27 is: 299,032.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,760.38 : 536,491.82 = 216,689.27 : x
  2. Step 2: Convert to fraction form
    388,760.38/536,491.82 = 216,689.27/x
  3. Step 3: Cross multiply
    388,760.38x = 536,491.82 × 216,689.27
  4. Step 4: Simplify right side
    388,760.38x = 116,252,017,070.87
  5. Step 5: Solve for x
    x = 116,252,017,070.87/388,760.38
  6. Step 6: Final answer
    x = 299,032.58

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1.5x scale

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.