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Finding the Fourth Proportional to 417,739.20, 626,608.80 and 276,021.60

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Solution

The fourth proportional to 417,739.20, 626,608.80 and 276,021.60 is: 414,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,739.20 : 626,608.80 = 276,021.60 : x
  2. Step 2: Convert to fraction form
    417,739.20/626,608.80 = 276,021.60/x
  3. Step 3: Cross multiply
    417,739.20x = 626,608.80 × 276,021.60
  4. Step 4: Simplify right side
    417,739.20x = 172,957,563,550.08
  5. Step 5: Solve for x
    x = 172,957,563,550.08/417,739.20
  6. Step 6: Final answer
    x = 414,032.40

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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.