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Finding the Fourth Proportional to 426,870.54, 640,398.15 and 227,161.67

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Solution

The fourth proportional to 426,870.54, 640,398.15 and 227,161.67 is: 340,791.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,870.54 : 640,398.15 = 227,161.67 : x
  2. Step 2: Convert to fraction form
    426,870.54/640,398.15 = 227,161.67/x
  3. Step 3: Cross multiply
    426,870.54x = 640,398.15 × 227,161.67
  4. Step 4: Simplify right side
    426,870.54x = 145,473,910,016.92
  5. Step 5: Solve for x
    x = 145,473,910,016.92/426,870.54
  6. Step 6: Final answer
    x = 340,791.64

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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.