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Finding the Fourth Proportional to 356,479.17, 534,778.22 and 131,840.11

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Solution

The fourth proportional to 356,479.17, 534,778.22 and 131,840.11 is: 197,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,479.17 : 534,778.22 = 131,840.11 : x
  2. Step 2: Convert to fraction form
    356,479.17/534,778.22 = 131,840.11/x
  3. Step 3: Cross multiply
    356,479.17x = 534,778.22 × 131,840.11
  4. Step 4: Simplify right side
    356,479.17x = 70,505,219,350.40
  5. Step 5: Solve for x
    x = 70,505,219,350.40/356,479.17
  6. Step 6: Final answer
    x = 197,782.16

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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.