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Finding the Fourth Proportional to 206,690.60, 310,035.90 and 185,695.40

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Solution

The fourth proportional to 206,690.60, 310,035.90 and 185,695.40 is: 278,543.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,690.60 : 310,035.90 = 185,695.40 : x
  2. Step 2: Convert to fraction form
    206,690.60/310,035.90 = 185,695.40/x
  3. Step 3: Cross multiply
    206,690.60x = 310,035.90 × 185,695.40
  4. Step 4: Simplify right side
    206,690.60x = 57,572,240,464.86
  5. Step 5: Solve for x
    x = 57,572,240,464.86/206,690.60
  6. Step 6: Final answer
    x = 278,543.10

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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.