Home / 813,171.90-1,219,665.54-214,179.93

Finding the Fourth Proportional to 813,171.90, 1,219,665.54 and 214,179.93

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Solution

The fourth proportional to 813,171.90, 1,219,665.54 and 214,179.93 is: 321,245.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,171.90 : 1,219,665.54 = 214,179.93 : x
  2. Step 2: Convert to fraction form
    813,171.90/1,219,665.54 = 214,179.93/x
  3. Step 3: Cross multiply
    813,171.90x = 1,219,665.54 × 214,179.93
  4. Step 4: Simplify right side
    813,171.90x = 261,227,879,980.61
  5. Step 5: Solve for x
    x = 261,227,879,980.61/813,171.90
  6. Step 6: Final answer
    x = 321,245.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.