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Finding the Fourth Proportional to 387,662.45, 534,895.77 and 226,486.37

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Solution

The fourth proportional to 387,662.45, 534,895.77 and 226,486.37 is: 312,505.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,662.45 : 534,895.77 = 226,486.37 : x
  2. Step 2: Convert to fraction form
    387,662.45/534,895.77 = 226,486.37/x
  3. Step 3: Cross multiply
    387,662.45x = 534,895.77 × 226,486.37
  4. Step 4: Simplify right side
    387,662.45x = 121,146,598,601.18
  5. Step 5: Solve for x
    x = 121,146,598,601.18/387,662.45
  6. Step 6: Final answer
    x = 312,505.38

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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.