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Finding the Fourth Proportional to 576,063.40, 863,835.90 and 220,959.40

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Solution

The fourth proportional to 576,063.40, 863,835.90 and 220,959.40 is: 331,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,063.40 : 863,835.90 = 220,959.40 : x
  2. Step 2: Convert to fraction form
    576,063.40/863,835.90 = 220,959.40/x
  3. Step 3: Cross multiply
    576,063.40x = 863,835.90 × 220,959.40
  4. Step 4: Simplify right side
    576,063.40x = 190,872,662,162.46
  5. Step 5: Solve for x
    x = 190,872,662,162.46/576,063.40
  6. Step 6: Final answer
    x = 331,339.68

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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.