Home / 805,126.20-1,207,688.52-206,086.40

Finding the Fourth Proportional to 805,126.20, 1,207,688.52 and 206,086.40

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Solution

The fourth proportional to 805,126.20, 1,207,688.52 and 206,086.40 is: 309,129.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,126.20 : 1,207,688.52 = 206,086.40 : x
  2. Step 2: Convert to fraction form
    805,126.20/1,207,688.52 = 206,086.40/x
  3. Step 3: Cross multiply
    805,126.20x = 1,207,688.52 × 206,086.40
  4. Step 4: Simplify right side
    805,126.20x = 248,888,173,369.69
  5. Step 5: Solve for x
    x = 248,888,173,369.69/805,126.20
  6. Step 6: Final answer
    x = 309,129.39

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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.