Home / 210,506.78-290,495.97-115,011.43

Finding the Fourth Proportional to 210,506.78, 290,495.97 and 115,011.43

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Solution

The fourth proportional to 210,506.78, 290,495.97 and 115,011.43 is: 158,713.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,506.78 : 290,495.97 = 115,011.43 : x
  2. Step 2: Convert to fraction form
    210,506.78/290,495.97 = 115,011.43/x
  3. Step 3: Cross multiply
    210,506.78x = 290,495.97 × 115,011.43
  4. Step 4: Simplify right side
    210,506.78x = 33,410,356,192.70
  5. Step 5: Solve for x
    x = 33,410,356,192.70/210,506.78
  6. Step 6: Final answer
    x = 158,713.92

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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.