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Finding the Fourth Proportional to 521,840.20, 782,833.20 and 222,318.40

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Solution

The fourth proportional to 521,840.20, 782,833.20 and 222,318.40 is: 333,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,840.20 : 782,833.20 = 222,318.40 : x
  2. Step 2: Convert to fraction form
    521,840.20/782,833.20 = 222,318.40/x
  3. Step 3: Cross multiply
    521,840.20x = 782,833.20 × 222,318.40
  4. Step 4: Simplify right side
    521,840.20x = 174,038,224,490.88
  5. Step 5: Solve for x
    x = 174,038,224,490.88/521,840.20
  6. Step 6: Final answer
    x = 333,508.66

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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.