Home / 210,496.68-290,489.22-115,007.40

Finding the Fourth Proportional to 210,496.68, 290,489.22 and 115,007.40

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Solution

The fourth proportional to 210,496.68, 290,489.22 and 115,007.40 is: 158,712.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,496.68 : 290,489.22 = 115,007.40 : x
  2. Step 2: Convert to fraction form
    210,496.68/290,489.22 = 115,007.40/x
  3. Step 3: Cross multiply
    210,496.68x = 290,489.22 × 115,007.40
  4. Step 4: Simplify right side
    210,496.68x = 33,408,409,920.23
  5. Step 5: Solve for x
    x = 33,408,409,920.23/210,496.68
  6. Step 6: Final answer
    x = 158,712.29

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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.