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Finding the Fourth Proportional to 228,530.78, 315,370.58 and 131,699.30

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Solution

The fourth proportional to 228,530.78, 315,370.58 and 131,699.30 is: 181,743.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,530.78 : 315,370.58 = 131,699.30 : x
  2. Step 2: Convert to fraction form
    228,530.78/315,370.58 = 131,699.30/x
  3. Step 3: Cross multiply
    228,530.78x = 315,370.58 × 131,699.30
  4. Step 4: Simplify right side
    228,530.78x = 41,534,084,626.59
  5. Step 5: Solve for x
    x = 41,534,084,626.59/228,530.78
  6. Step 6: Final answer
    x = 181,743.94

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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.