Home / 210,890.31-291,028.30-115,396.98

Finding the Fourth Proportional to 210,890.31, 291,028.30 and 115,396.98

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Solution

The fourth proportional to 210,890.31, 291,028.30 and 115,396.98 is: 159,247.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,890.31 : 291,028.30 = 115,396.98 : x
  2. Step 2: Convert to fraction form
    210,890.31/291,028.30 = 115,396.98/x
  3. Step 3: Cross multiply
    210,890.31x = 291,028.30 × 115,396.98
  4. Step 4: Simplify right side
    210,890.31x = 33,583,786,914.53
  5. Step 5: Solve for x
    x = 33,583,786,914.53/210,890.31
  6. Step 6: Final answer
    x = 159,247.65

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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.