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Finding the Fourth Proportional to 387,740.70, 534,863.68 and 226,561.54

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Solution

The fourth proportional to 387,740.70, 534,863.68 and 226,561.54 is: 312,527.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,740.70 : 534,863.68 = 226,561.54 : x
  2. Step 2: Convert to fraction form
    387,740.70/534,863.68 = 226,561.54/x
  3. Step 3: Cross multiply
    387,740.70x = 534,863.68 × 226,561.54
  4. Step 4: Simplify right side
    387,740.70x = 121,179,539,030.87
  5. Step 5: Solve for x
    x = 121,179,539,030.87/387,740.70
  6. Step 6: Final answer
    x = 312,527.26

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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.