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Finding the Fourth Proportional to 324,749.70, 487,124.55 and 206,943.30

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Solution

The fourth proportional to 324,749.70, 487,124.55 and 206,943.30 is: 310,414.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,749.70 : 487,124.55 = 206,943.30 : x
  2. Step 2: Convert to fraction form
    324,749.70/487,124.55 = 206,943.30/x
  3. Step 3: Cross multiply
    324,749.70x = 487,124.55 × 206,943.30
  4. Step 4: Simplify right side
    324,749.70x = 100,807,161,888.02
  5. Step 5: Solve for x
    x = 100,807,161,888.02/324,749.70
  6. Step 6: Final answer
    x = 310,414.95

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1.5x scale

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.