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Finding the Fourth Proportional to 478,819.30, 660,772.63 and 263,954.65

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Solution

The fourth proportional to 478,819.30, 660,772.63 and 263,954.65 is: 364,258.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,819.30 : 660,772.63 = 263,954.65 : x
  2. Step 2: Convert to fraction form
    478,819.30/660,772.63 = 263,954.65/x
  3. Step 3: Cross multiply
    478,819.30x = 660,772.63 × 263,954.65
  4. Step 4: Simplify right side
    478,819.30x = 174,414,006,959.24
  5. Step 5: Solve for x
    x = 174,414,006,959.24/478,819.30
  6. Step 6: Final answer
    x = 364,258.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.