Home / 206,030.22-309,518.98-145,380.08

Finding the Fourth Proportional to 206,030.22, 309,518.98 and 145,380.08

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Solution

The fourth proportional to 206,030.22, 309,518.98 and 145,380.08 is: 218,404.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,030.22 : 309,518.98 = 145,380.08 : x
  2. Step 2: Convert to fraction form
    206,030.22/309,518.98 = 145,380.08/x
  3. Step 3: Cross multiply
    206,030.22x = 309,518.98 × 145,380.08
  4. Step 4: Simplify right side
    206,030.22x = 44,997,891,799.42
  5. Step 5: Solve for x
    x = 44,997,891,799.42/206,030.22
  6. Step 6: Final answer
    x = 218,404.33

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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.