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Finding the Fourth Proportional to 813,888.90, 1,220,814.15 and 222,912.90

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Solution

The fourth proportional to 813,888.90, 1,220,814.15 and 222,912.90 is: 334,364.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,888.90 : 1,220,814.15 = 222,912.90 : x
  2. Step 2: Convert to fraction form
    813,888.90/1,220,814.15 = 222,912.90/x
  3. Step 3: Cross multiply
    813,888.90x = 1,220,814.15 × 222,912.90
  4. Step 4: Simplify right side
    813,888.90x = 272,135,222,537.54
  5. Step 5: Solve for x
    x = 272,135,222,537.54/813,888.90
  6. Step 6: Final answer
    x = 334,364.09

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1.5x scale

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.