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Finding the Fourth Proportional to 576,676.80, 865,166.40 and 221,702.40

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Solution

The fourth proportional to 576,676.80, 865,166.40 and 221,702.40 is: 332,611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,676.80 : 865,166.40 = 221,702.40 : x
  2. Step 2: Convert to fraction form
    576,676.80/865,166.40 = 221,702.40/x
  3. Step 3: Cross multiply
    576,676.80x = 865,166.40 × 221,702.40
  4. Step 4: Simplify right side
    576,676.80x = 191,809,467,279.36
  5. Step 5: Solve for x
    x = 191,809,467,279.36/576,676.80
  6. Step 6: Final answer
    x = 332,611.73

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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.