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Finding the Fourth Proportional to 389,990.52, 538,190.46 and 228,848.22

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Solution

The fourth proportional to 389,990.52, 538,190.46 and 228,848.22 is: 315,812.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,990.52 : 538,190.46 = 228,848.22 : x
  2. Step 2: Convert to fraction form
    389,990.52/538,190.46 = 228,848.22/x
  3. Step 3: Cross multiply
    389,990.52x = 538,190.46 × 228,848.22
  4. Step 4: Simplify right side
    389,990.52x = 123,163,928,791.98
  5. Step 5: Solve for x
    x = 123,163,928,791.98/389,990.52
  6. Step 6: Final answer
    x = 315,812.62

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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.