Home / 210,979.26-291,151.47-115,486.50

Finding the Fourth Proportional to 210,979.26, 291,151.47 and 115,486.50

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Solution

The fourth proportional to 210,979.26, 291,151.47 and 115,486.50 is: 159,371.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,979.26 : 291,151.47 = 115,486.50 : x
  2. Step 2: Convert to fraction form
    210,979.26/291,151.47 = 115,486.50/x
  3. Step 3: Cross multiply
    210,979.26x = 291,151.47 × 115,486.50
  4. Step 4: Simplify right side
    210,979.26x = 33,624,064,240.16
  5. Step 5: Solve for x
    x = 33,624,064,240.16/210,979.26
  6. Step 6: Final answer
    x = 159,371.42

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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.