Home / 210,890.08-291,028.30-115,396.78

Finding the Fourth Proportional to 210,890.08, 291,028.30 and 115,396.78

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Solution

The fourth proportional to 210,890.08, 291,028.30 and 115,396.78 is: 159,247.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,890.08 : 291,028.30 = 115,396.78 : x
  2. Step 2: Convert to fraction form
    210,890.08/291,028.30 = 115,396.78/x
  3. Step 3: Cross multiply
    210,890.08x = 291,028.30 × 115,396.78
  4. Step 4: Simplify right side
    210,890.08x = 33,583,728,708.87
  5. Step 5: Solve for x
    x = 33,583,728,708.87/210,890.08
  6. Step 6: Final answer
    x = 159,247.55

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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.