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Finding the Fourth Proportional to 367,601.70, 551,402.55 and 145,985.70

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Solution

The fourth proportional to 367,601.70, 551,402.55 and 145,985.70 is: 218,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,601.70 : 551,402.55 = 145,985.70 : x
  2. Step 2: Convert to fraction form
    367,601.70/551,402.55 = 145,985.70/x
  3. Step 3: Cross multiply
    367,601.70x = 551,402.55 × 145,985.70
  4. Step 4: Simplify right side
    367,601.70x = 80,496,887,243.54
  5. Step 5: Solve for x
    x = 80,496,887,243.54/367,601.70
  6. Step 6: Final answer
    x = 218,978.55

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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.