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Finding the Fourth Proportional to 576,095.40, 863,883.90 and 220,991.40

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Solution

The fourth proportional to 576,095.40, 863,883.90 and 220,991.40 is: 331,387.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,095.40 : 863,883.90 = 220,991.40 : x
  2. Step 2: Convert to fraction form
    576,095.40/863,883.90 = 220,991.40/x
  3. Step 3: Cross multiply
    576,095.40x = 863,883.90 × 220,991.40
  4. Step 4: Simplify right side
    576,095.40x = 190,910,912,498.46
  5. Step 5: Solve for x
    x = 190,910,912,498.46/576,095.40
  6. Step 6: Final answer
    x = 331,387.67

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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.