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Finding the Fourth Proportional to 222,419.20, 333,653.10 and 215,420.80

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Solution

The fourth proportional to 222,419.20, 333,653.10 and 215,420.80 is: 323,154.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,419.20 : 333,653.10 = 215,420.80 : x
  2. Step 2: Convert to fraction form
    222,419.20/333,653.10 = 215,420.80/x
  3. Step 3: Cross multiply
    222,419.20x = 333,653.10 × 215,420.80
  4. Step 4: Simplify right side
    222,419.20x = 71,875,817,724.48
  5. Step 5: Solve for x
    x = 71,875,817,724.48/222,419.20
  6. Step 6: Final answer
    x = 323,154.74

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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.