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Finding the Fourth Proportional to 366,656.10, 550,421.55 and 206,859.30

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Solution

The fourth proportional to 366,656.10, 550,421.55 and 206,859.30 is: 310,535.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,656.10 : 550,421.55 = 206,859.30 : x
  2. Step 2: Convert to fraction form
    366,656.10/550,421.55 = 206,859.30/x
  3. Step 3: Cross multiply
    366,656.10x = 550,421.55 × 206,859.30
  4. Step 4: Simplify right side
    366,656.10x = 113,859,816,537.92
  5. Step 5: Solve for x
    x = 113,859,816,537.92/366,656.10
  6. Step 6: Final answer
    x = 310,535.72

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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.