Home / 811,059.06-1,216,657.79-212,019.26

Finding the Fourth Proportional to 811,059.06, 1,216,657.79 and 212,019.26

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Solution

The fourth proportional to 811,059.06, 1,216,657.79 and 212,019.26 is: 318,046.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,059.06 : 1,216,657.79 = 212,019.26 : x
  2. Step 2: Convert to fraction form
    811,059.06/1,216,657.79 = 212,019.26/x
  3. Step 3: Cross multiply
    811,059.06x = 1,216,657.79 × 212,019.26
  4. Step 4: Simplify right side
    811,059.06x = 257,954,877,165.65
  5. Step 5: Solve for x
    x = 257,954,877,165.65/811,059.06
  6. Step 6: Final answer
    x = 318,046.97

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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.