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Finding the Fourth Proportional to 356,620.90, 534,367.94 and 131,671.30

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Solution

The fourth proportional to 356,620.90, 534,367.94 and 131,671.30 is: 197,298.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,620.90 : 534,367.94 = 131,671.30 : x
  2. Step 2: Convert to fraction form
    356,620.90/534,367.94 = 131,671.30/x
  3. Step 3: Cross multiply
    356,620.90x = 534,367.94 × 131,671.30
  4. Step 4: Simplify right side
    356,620.90x = 70,360,921,338.12
  5. Step 5: Solve for x
    x = 70,360,921,338.12/356,620.90
  6. Step 6: Final answer
    x = 197,298.93

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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.