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Finding the Fourth Proportional to 576,307.86, 864,573.84 and 221,295.78

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Solution

The fourth proportional to 576,307.86, 864,573.84 and 221,295.78 is: 331,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,307.86 : 864,573.84 = 221,295.78 : x
  2. Step 2: Convert to fraction form
    576,307.86/864,573.84 = 221,295.78/x
  3. Step 3: Cross multiply
    576,307.86x = 864,573.84 × 221,295.78
  4. Step 4: Simplify right side
    576,307.86x = 191,326,542,290.40
  5. Step 5: Solve for x
    x = 191,326,542,290.40/576,307.86
  6. Step 6: Final answer
    x = 331,986.70

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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.