Home / 210,829.13-290,946.50-115,333.78

Finding the Fourth Proportional to 210,829.13, 290,946.50 and 115,333.78

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Solution

The fourth proportional to 210,829.13, 290,946.50 and 115,333.78 is: 159,161.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,829.13 : 290,946.50 = 115,333.78 : x
  2. Step 2: Convert to fraction form
    210,829.13/290,946.50 = 115,333.78/x
  3. Step 3: Cross multiply
    210,829.13x = 290,946.50 × 115,333.78
  4. Step 4: Simplify right side
    210,829.13x = 33,555,958,318.73
  5. Step 5: Solve for x
    x = 33,555,958,318.73/210,829.13
  6. Step 6: Final answer
    x = 159,161.87

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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.