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Finding the Fourth Proportional to 387,950.57, 535,291.50 and 226,774.43

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Solution

The fourth proportional to 387,950.57, 535,291.50 and 226,774.43 is: 312,901.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,950.57 : 535,291.50 = 226,774.43 : x
  2. Step 2: Convert to fraction form
    387,950.57/535,291.50 = 226,774.43/x
  3. Step 3: Cross multiply
    387,950.57x = 535,291.50 × 226,774.43
  4. Step 4: Simplify right side
    387,950.57x = 121,390,424,796.35
  5. Step 5: Solve for x
    x = 121,390,424,796.35/387,950.57
  6. Step 6: Final answer
    x = 312,901.78

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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.