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Finding the Fourth Proportional to 366,411.75, 505,677.51 and 215,537.91

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Solution

The fourth proportional to 366,411.75, 505,677.51 and 215,537.91 is: 297,459.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,411.75 : 505,677.51 = 215,537.91 : x
  2. Step 2: Convert to fraction form
    366,411.75/505,677.51 = 215,537.91/x
  3. Step 3: Cross multiply
    366,411.75x = 505,677.51 × 215,537.91
  4. Step 4: Simplify right side
    366,411.75x = 108,992,673,639.40
  5. Step 5: Solve for x
    x = 108,992,673,639.40/366,411.75
  6. Step 6: Final answer
    x = 297,459.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.