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Finding the Fourth Proportional to 356,306.21, 534,511.48 and 103,553.86

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Solution

The fourth proportional to 356,306.21, 534,511.48 and 103,553.86 is: 155,345.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,306.21 : 534,511.48 = 103,553.86 : x
  2. Step 2: Convert to fraction form
    356,306.21/534,511.48 = 103,553.86/x
  3. Step 3: Cross multiply
    356,306.21x = 534,511.48 × 103,553.86
  4. Step 4: Simplify right side
    356,306.21x = 55,350,726,968.31
  5. Step 5: Solve for x
    x = 55,350,726,968.31/356,306.21
  6. Step 6: Final answer
    x = 155,345.95

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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.