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Finding the Fourth Proportional to 355,902.17, 533,900.24 and 131,420.39

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Solution

The fourth proportional to 355,902.17, 533,900.24 and 131,420.39 is: 197,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,902.17 : 533,900.24 = 131,420.39 : x
  2. Step 2: Convert to fraction form
    355,902.17/533,900.24 = 131,420.39/x
  3. Step 3: Cross multiply
    355,902.17x = 533,900.24 × 131,420.39
  4. Step 4: Simplify right side
    355,902.17x = 70,165,377,104.79
  5. Step 5: Solve for x
    x = 70,165,377,104.79/355,902.17
  6. Step 6: Final answer
    x = 197,147.93

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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.