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Finding the Fourth Proportional to 206,833.60, 310,323.30 and 199,543.60

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Solution

The fourth proportional to 206,833.60, 310,323.30 and 199,543.60 is: 299,385.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,833.60 : 310,323.30 = 199,543.60 : x
  2. Step 2: Convert to fraction form
    206,833.60/310,323.30 = 199,543.60/x
  3. Step 3: Cross multiply
    206,833.60x = 310,323.30 × 199,543.60
  4. Step 4: Simplify right side
    206,833.60x = 61,923,028,445.88
  5. Step 5: Solve for x
    x = 61,923,028,445.88/206,833.60
  6. Step 6: Final answer
    x = 299,385.73

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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.