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Finding the Fourth Proportional to 356,238.27, 534,392.51 and 103,520.97

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Solution

The fourth proportional to 356,238.27, 534,392.51 and 103,520.97 is: 155,291.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,238.27 : 534,392.51 = 103,520.97 : x
  2. Step 2: Convert to fraction form
    356,238.27/534,392.51 = 103,520.97/x
  3. Step 3: Cross multiply
    356,238.27x = 534,392.51 × 103,520.97
  4. Step 4: Simplify right side
    356,238.27x = 55,320,830,478.33
  5. Step 5: Solve for x
    x = 55,320,830,478.33/356,238.27
  6. Step 6: Final answer
    x = 155,291.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.