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Finding the Fourth Proportional to 393,077.70, 589,616.55 and 126,846.90

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Solution

The fourth proportional to 393,077.70, 589,616.55 and 126,846.90 is: 190,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,077.70 : 589,616.55 = 126,846.90 : x
  2. Step 2: Convert to fraction form
    393,077.70/589,616.55 = 126,846.90/x
  3. Step 3: Cross multiply
    393,077.70x = 589,616.55 × 126,846.90
  4. Step 4: Simplify right side
    393,077.70x = 74,791,031,556.20
  5. Step 5: Solve for x
    x = 74,791,031,556.20/393,077.70
  6. Step 6: Final answer
    x = 190,270.35

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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.