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Finding the Fourth Proportional to 537,186.38, 805,871.37 and 221,470.70

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Solution

The fourth proportional to 537,186.38, 805,871.37 and 221,470.70 is: 332,243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,186.38 : 805,871.37 = 221,470.70 : x
  2. Step 2: Convert to fraction form
    537,186.38/805,871.37 = 221,470.70/x
  3. Step 3: Cross multiply
    537,186.38x = 805,871.37 × 221,470.70
  4. Step 4: Simplify right side
    537,186.38x = 178,476,896,423.86
  5. Step 5: Solve for x
    x = 178,476,896,423.86/537,186.38
  6. Step 6: Final answer
    x = 332,243.90

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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.