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Finding the Fourth Proportional to 445,451.25, 667,859.45 and 208,664.76

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Solution

The fourth proportional to 445,451.25, 667,859.45 and 208,664.76 is: 312,848.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,451.25 : 667,859.45 = 208,664.76 : x
  2. Step 2: Convert to fraction form
    445,451.25/667,859.45 = 208,664.76/x
  3. Step 3: Cross multiply
    445,451.25x = 667,859.45 × 208,664.76
  4. Step 4: Simplify right side
    445,451.25x = 139,358,730,804.66
  5. Step 5: Solve for x
    x = 139,358,730,804.66/445,451.25
  6. Step 6: Final answer
    x = 312,848.44

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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.