Home / 210,788.11-290,881.56-115,292.71

Finding the Fourth Proportional to 210,788.11, 290,881.56 and 115,292.71

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Solution

The fourth proportional to 210,788.11, 290,881.56 and 115,292.71 is: 159,100.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,788.11 : 290,881.56 = 115,292.71 : x
  2. Step 2: Convert to fraction form
    210,788.11/290,881.56 = 115,292.71/x
  3. Step 3: Cross multiply
    210,788.11x = 290,881.56 × 115,292.71
  4. Step 4: Simplify right side
    210,788.11x = 33,536,523,341.43
  5. Step 5: Solve for x
    x = 33,536,523,341.43/210,788.11
  6. Step 6: Final answer
    x = 159,100.64

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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.