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Finding the Fourth Proportional to 287,001, 396,061.38 and 167,769

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Solution

The fourth proportional to 287,001, 396,061.38 and 167,769 is: 231,521.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,001 : 396,061.38 = 167,769 : x
  2. Step 2: Convert to fraction form
    287,001/396,061.38 = 167,769/x
  3. Step 3: Cross multiply
    287,001x = 396,061.38 × 167,769
  4. Step 4: Simplify right side
    287,001x = 66,446,821,661.22
  5. Step 5: Solve for x
    x = 66,446,821,661.22/287,001
  6. Step 6: Final answer
    x = 231,521.22

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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.