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Finding the Fourth Proportional to 417,773.60, 625,738.80 and 251,271.20

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Solution

The fourth proportional to 417,773.60, 625,738.80 and 251,271.20 is: 376,352.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,773.60 : 625,738.80 = 251,271.20 : x
  2. Step 2: Convert to fraction form
    417,773.60/625,738.80 = 251,271.20/x
  3. Step 3: Cross multiply
    417,773.60x = 625,738.80 × 251,271.20
  4. Step 4: Simplify right side
    417,773.60x = 157,230,139,162.56
  5. Step 5: Solve for x
    x = 157,230,139,162.56/417,773.60
  6. Step 6: Final answer
    x = 376,352.50

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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.