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Finding the Fourth Proportional to 408,490.00, 612,739.45 and 124,226.78

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Solution

The fourth proportional to 408,490.00, 612,739.45 and 124,226.78 is: 186,341.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,490.00 : 612,739.45 = 124,226.78 : x
  2. Step 2: Convert to fraction form
    408,490.00/612,739.45 = 124,226.78/x
  3. Step 3: Cross multiply
    408,490.00x = 612,739.45 × 124,226.78
  4. Step 4: Simplify right side
    408,490.00x = 76,118,645,788.77
  5. Step 5: Solve for x
    x = 76,118,645,788.77/408,490.00
  6. Step 6: Final answer
    x = 186,341.52

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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.