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Finding the Fourth Proportional to 355,778.57, 533,634.76 and 99,634.31

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Solution

The fourth proportional to 355,778.57, 533,634.76 and 99,634.31 is: 149,442.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,778.57 : 533,634.76 = 99,634.31 : x
  2. Step 2: Convert to fraction form
    355,778.57/533,634.76 = 99,634.31/x
  3. Step 3: Cross multiply
    355,778.57x = 533,634.76 × 99,634.31
  4. Step 4: Simplify right side
    355,778.57x = 53,168,330,606.44
  5. Step 5: Solve for x
    x = 53,168,330,606.44/355,778.57
  6. Step 6: Final answer
    x = 149,442.20

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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.