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Finding the Fourth Proportional to 535,289.92, 738,489.28 and 308,891.68

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Solution

The fourth proportional to 535,289.92, 738,489.28 and 308,891.68 is: 426,148.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,289.92 : 738,489.28 = 308,891.68 : x
  2. Step 2: Convert to fraction form
    535,289.92/738,489.28 = 308,891.68/x
  3. Step 3: Cross multiply
    535,289.92x = 738,489.28 × 308,891.68
  4. Step 4: Simplify right side
    535,289.92x = 228,113,194,361.19
  5. Step 5: Solve for x
    x = 228,113,194,361.19/535,289.92
  6. Step 6: Final answer
    x = 426,148.87

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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.