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Finding the Fourth Proportional to 408,420.15, 563,610.08 and 222,146.93

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Solution

The fourth proportional to 408,420.15, 563,610.08 and 222,146.93 is: 306,557.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,420.15 : 563,610.08 = 222,146.93 : x
  2. Step 2: Convert to fraction form
    408,420.15/563,610.08 = 222,146.93/x
  3. Step 3: Cross multiply
    408,420.15x = 563,610.08 × 222,146.93
  4. Step 4: Simplify right side
    408,420.15x = 125,204,245,060.27
  5. Step 5: Solve for x
    x = 125,204,245,060.27/408,420.15
  6. Step 6: Final answer
    x = 306,557.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.