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Finding the Fourth Proportional to 262,115.80, 393,465.30 and 162,388.60

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Solution

The fourth proportional to 262,115.80, 393,465.30 and 162,388.60 is: 243,763.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,115.80 : 393,465.30 = 162,388.60 : x
  2. Step 2: Convert to fraction form
    262,115.80/393,465.30 = 162,388.60/x
  3. Step 3: Cross multiply
    262,115.80x = 393,465.30 × 162,388.60
  4. Step 4: Simplify right side
    262,115.80x = 63,894,279,215.58
  5. Step 5: Solve for x
    x = 63,894,279,215.58/262,115.80
  6. Step 6: Final answer
    x = 243,763.55

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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.