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Finding the Fourth Proportional to 391,650.89, 540,350.60 and 228,270.11

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Solution

The fourth proportional to 391,650.89, 540,350.60 and 228,270.11 is: 314,938.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,650.89 : 540,350.60 = 228,270.11 : x
  2. Step 2: Convert to fraction form
    391,650.89/540,350.60 = 228,270.11/x
  3. Step 3: Cross multiply
    391,650.89x = 540,350.60 × 228,270.11
  4. Step 4: Simplify right side
    391,650.89x = 123,345,887,057.46
  5. Step 5: Solve for x
    x = 123,345,887,057.46/391,650.89
  6. Step 6: Final answer
    x = 314,938.36

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1.5x scale

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.