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Finding the Fourth Proportional to 387,738.70, 534,860.92 and 226,559.53

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Solution

The fourth proportional to 387,738.70, 534,860.92 and 226,559.53 is: 312,524.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,738.70 : 534,860.92 = 226,559.53 : x
  2. Step 2: Convert to fraction form
    387,738.70/534,860.92 = 226,559.53/x
  3. Step 3: Cross multiply
    387,738.70x = 534,860.92 × 226,559.53
  4. Step 4: Simplify right side
    387,738.70x = 121,177,839,602.34
  5. Step 5: Solve for x
    x = 121,177,839,602.34/387,738.70
  6. Step 6: Final answer
    x = 312,524.49

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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.