Home / 210,489.12-290,473.92-115,001.28

Finding the Fourth Proportional to 210,489.12, 290,473.92 and 115,001.28

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Solution

The fourth proportional to 210,489.12, 290,473.92 and 115,001.28 is: 158,701.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,489.12 : 290,473.92 = 115,001.28 : x
  2. Step 2: Convert to fraction form
    210,489.12/290,473.92 = 115,001.28/x
  3. Step 3: Cross multiply
    210,489.12x = 290,473.92 × 115,001.28
  4. Step 4: Simplify right side
    210,489.12x = 33,404,872,606.62
  5. Step 5: Solve for x
    x = 33,404,872,606.62/210,489.12
  6. Step 6: Final answer
    x = 158,701.18

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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.