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Finding the Fourth Proportional to 292,755.39, 438,833.79 and 166,128.09

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Solution

The fourth proportional to 292,755.39, 438,833.79 and 166,128.09 is: 249,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,755.39 : 438,833.79 = 166,128.09 : x
  2. Step 2: Convert to fraction form
    292,755.39/438,833.79 = 166,128.09/x
  3. Step 3: Cross multiply
    292,755.39x = 438,833.79 × 166,128.09
  4. Step 4: Simplify right side
    292,755.39x = 72,902,619,360.16
  5. Step 5: Solve for x
    x = 72,902,619,360.16/292,755.39
  6. Step 6: Final answer
    x = 249,022.30

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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.