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Finding the Fourth Proportional to 606,212.20, 909,231.90 and 206,871.40

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Solution

The fourth proportional to 606,212.20, 909,231.90 and 206,871.40 is: 310,277.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,212.20 : 909,231.90 = 206,871.40 : x
  2. Step 2: Convert to fraction form
    606,212.20/909,231.90 = 206,871.40/x
  3. Step 3: Cross multiply
    606,212.20x = 909,231.90 × 206,871.40
  4. Step 4: Simplify right side
    606,212.20x = 188,094,076,077.66
  5. Step 5: Solve for x
    x = 188,094,076,077.66/606,212.20
  6. Step 6: Final answer
    x = 310,277.62

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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.