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Finding the Fourth Proportional to 485,595.44, 728,479.30 and 148,628.64

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Solution

The fourth proportional to 485,595.44, 728,479.30 and 148,628.64 is: 222,969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,595.44 : 728,479.30 = 148,628.64 : x
  2. Step 2: Convert to fraction form
    485,595.44/728,479.30 = 148,628.64/x
  3. Step 3: Cross multiply
    485,595.44x = 728,479.30 × 148,628.64
  4. Step 4: Simplify right side
    485,595.44x = 108,272,887,627.15
  5. Step 5: Solve for x
    x = 108,272,887,627.15/485,595.44
  6. Step 6: Final answer
    x = 222,969.33

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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.