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Finding the Fourth Proportional to 402,415.48, 603,156.66 and 379,087.48

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Solution

The fourth proportional to 402,415.48, 603,156.66 and 379,087.48 is: 568,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,415.48 : 603,156.66 = 379,087.48 : x
  2. Step 2: Convert to fraction form
    402,415.48/603,156.66 = 379,087.48/x
  3. Step 3: Cross multiply
    402,415.48x = 603,156.66 × 379,087.48
  4. Step 4: Simplify right side
    402,415.48x = 228,649,138,284.62
  5. Step 5: Solve for x
    x = 228,649,138,284.62/402,415.48
  6. Step 6: Final answer
    x = 568,191.71

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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.