Home / 238,899.78-358,346.43-81,238.14

Finding the Fourth Proportional to 238,899.78, 358,346.43 and 81,238.14

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Solution

The fourth proportional to 238,899.78, 358,346.43 and 81,238.14 is: 121,856.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,899.78 : 358,346.43 = 81,238.14 : x
  2. Step 2: Convert to fraction form
    238,899.78/358,346.43 = 81,238.14/x
  3. Step 3: Cross multiply
    238,899.78x = 358,346.43 × 81,238.14
  4. Step 4: Simplify right side
    238,899.78x = 29,111,397,448.84
  5. Step 5: Solve for x
    x = 29,111,397,448.84/238,899.78
  6. Step 6: Final answer
    x = 121,856.11

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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.