Home / 811,181.67-1,216,679.55-212,200.65

Finding the Fourth Proportional to 811,181.67, 1,216,679.55 and 212,200.65

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Solution

The fourth proportional to 811,181.67, 1,216,679.55 and 212,200.65 is: 318,276.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,181.67 : 1,216,679.55 = 212,200.65 : x
  2. Step 2: Convert to fraction form
    811,181.67/1,216,679.55 = 212,200.65/x
  3. Step 3: Cross multiply
    811,181.67x = 1,216,679.55 × 212,200.65
  4. Step 4: Simplify right side
    811,181.67x = 258,180,191,351.71
  5. Step 5: Solve for x
    x = 258,180,191,351.71/811,181.67
  6. Step 6: Final answer
    x = 318,276.66

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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.