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Finding the Fourth Proportional to 361,674.54, 499,011.57 and 216,421.29

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Solution

The fourth proportional to 361,674.54, 499,011.57 and 216,421.29 is: 298,601.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,674.54 : 499,011.57 = 216,421.29 : x
  2. Step 2: Convert to fraction form
    361,674.54/499,011.57 = 216,421.29/x
  3. Step 3: Cross multiply
    361,674.54x = 499,011.57 × 216,421.29
  4. Step 4: Simplify right side
    361,674.54x = 107,996,727,704.33
  5. Step 5: Solve for x
    x = 107,996,727,704.33/361,674.54
  6. Step 6: Final answer
    x = 298,601.96

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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.