Home / 210,834.14-290,953.40-115,338.78

Finding the Fourth Proportional to 210,834.14, 290,953.40 and 115,338.78

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Solution

The fourth proportional to 210,834.14, 290,953.40 and 115,338.78 is: 159,168.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,834.14 : 290,953.40 = 115,338.78 : x
  2. Step 2: Convert to fraction form
    210,834.14/290,953.40 = 115,338.78/x
  3. Step 3: Cross multiply
    210,834.14x = 290,953.40 × 115,338.78
  4. Step 4: Simplify right side
    210,834.14x = 33,558,210,192.85
  5. Step 5: Solve for x
    x = 33,558,210,192.85/210,834.14
  6. Step 6: Final answer
    x = 159,168.77

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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.