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Finding the Fourth Proportional to 384,879.92, 577,172.20 and 132,113.28

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Solution

The fourth proportional to 384,879.92, 577,172.20 and 132,113.28 is: 198,119.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,879.92 : 577,172.20 = 132,113.28 : x
  2. Step 2: Convert to fraction form
    384,879.92/577,172.20 = 132,113.28/x
  3. Step 3: Cross multiply
    384,879.92x = 577,172.20 × 132,113.28
  4. Step 4: Simplify right side
    384,879.92x = 76,252,112,466.82
  5. Step 5: Solve for x
    x = 76,252,112,466.82/384,879.92
  6. Step 6: Final answer
    x = 198,119.23

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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.