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Finding the Fourth Proportional to 308,508.80, 462,878.40 and 121,650.56

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Solution

The fourth proportional to 308,508.80, 462,878.40 and 121,650.56 is: 182,521.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,508.80 : 462,878.40 = 121,650.56 : x
  2. Step 2: Convert to fraction form
    308,508.80/462,878.40 = 121,650.56/x
  3. Step 3: Cross multiply
    308,508.80x = 462,878.40 × 121,650.56
  4. Step 4: Simplify right side
    308,508.80x = 56,309,416,571.90
  5. Step 5: Solve for x
    x = 56,309,416,571.90/308,508.80
  6. Step 6: Final answer
    x = 182,521.27

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1.5x scale

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.