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Finding the Fourth Proportional to 576,908.90, 865,104.15 and 221,804.90

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Solution

The fourth proportional to 576,908.90, 865,104.15 and 221,804.90 is: 332,607.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,908.90 : 865,104.15 = 221,804.90 : x
  2. Step 2: Convert to fraction form
    576,908.90/865,104.15 = 221,804.90/x
  3. Step 3: Cross multiply
    576,908.90x = 865,104.15 × 221,804.90
  4. Step 4: Simplify right side
    576,908.90x = 191,884,339,480.34
  5. Step 5: Solve for x
    x = 191,884,339,480.34/576,908.90
  6. Step 6: Final answer
    x = 332,607.70

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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.