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Finding the Fourth Proportional to 387,712.31, 534,963.83 and 226,536.21

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Solution

The fourth proportional to 387,712.31, 534,963.83 and 226,536.21 is: 312,573.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,712.31 : 534,963.83 = 226,536.21 : x
  2. Step 2: Convert to fraction form
    387,712.31/534,963.83 = 226,536.21/x
  3. Step 3: Cross multiply
    387,712.31x = 534,963.83 × 226,536.21
  4. Step 4: Simplify right side
    387,712.31x = 121,188,677,402.60
  5. Step 5: Solve for x
    x = 121,188,677,402.60/387,712.31
  6. Step 6: Final answer
    x = 312,573.72

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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.