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Finding the Fourth Proportional to 478,265.27, 660,035.93 and 263,405.28

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Solution

The fourth proportional to 478,265.27, 660,035.93 and 263,405.28 is: 363,515.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,265.27 : 660,035.93 = 263,405.28 : x
  2. Step 2: Convert to fraction form
    478,265.27/660,035.93 = 263,405.28/x
  3. Step 3: Cross multiply
    478,265.27x = 660,035.93 × 263,405.28
  4. Step 4: Simplify right side
    478,265.27x = 173,856,947,634.68
  5. Step 5: Solve for x
    x = 173,856,947,634.68/478,265.27
  6. Step 6: Final answer
    x = 363,515.73

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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.