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Finding the Fourth Proportional to 389,967.92, 538,166.77 and 220,227.56

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Solution

The fourth proportional to 389,967.92, 538,166.77 and 220,227.56 is: 303,920.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,967.92 : 538,166.77 = 220,227.56 : x
  2. Step 2: Convert to fraction form
    389,967.92/538,166.77 = 220,227.56/x
  3. Step 3: Cross multiply
    389,967.92x = 538,166.77 × 220,227.56
  4. Step 4: Simplify right side
    389,967.92x = 118,519,152,183.63
  5. Step 5: Solve for x
    x = 118,519,152,183.63/389,967.92
  6. Step 6: Final answer
    x = 303,920.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.