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Finding the Fourth Proportional to 642,993.12, 964,489.68 and 222,039.36

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Solution

The fourth proportional to 642,993.12, 964,489.68 and 222,039.36 is: 333,059.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,993.12 : 964,489.68 = 222,039.36 : x
  2. Step 2: Convert to fraction form
    642,993.12/964,489.68 = 222,039.36/x
  3. Step 3: Cross multiply
    642,993.12x = 964,489.68 × 222,039.36
  4. Step 4: Simplify right side
    642,993.12x = 214,154,671,273.81
  5. Step 5: Solve for x
    x = 214,154,671,273.81/642,993.12
  6. Step 6: Final answer
    x = 333,059.04

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Similar ratio
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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.