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Finding the Fourth Proportional to 505,448.98, 758,158.90 and 131,471.98

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Solution

The fourth proportional to 505,448.98, 758,158.90 and 131,471.98 is: 197,204.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,448.98 : 758,158.90 = 131,471.98 : x
  2. Step 2: Convert to fraction form
    505,448.98/758,158.90 = 131,471.98/x
  3. Step 3: Cross multiply
    505,448.98x = 758,158.90 × 131,471.98
  4. Step 4: Simplify right side
    505,448.98x = 99,676,651,737.62
  5. Step 5: Solve for x
    x = 99,676,651,737.62/505,448.98
  6. Step 6: Final answer
    x = 197,204.18

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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.