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Finding the Fourth Proportional to 228,507.77, 315,343.98 and 131,658.20

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Solution

The fourth proportional to 228,507.77, 315,343.98 and 131,658.20 is: 181,690.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,507.77 : 315,343.98 = 131,658.20 : x
  2. Step 2: Convert to fraction form
    228,507.77/315,343.98 = 131,658.20/x
  3. Step 3: Cross multiply
    228,507.77x = 315,343.98 × 131,658.20
  4. Step 4: Simplify right side
    228,507.77x = 41,517,619,210.92
  5. Step 5: Solve for x
    x = 41,517,619,210.92/228,507.77
  6. Step 6: Final answer
    x = 181,690.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.