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Finding the Fourth Proportional to 417,900.80, 626,422.26 and 165,078.92

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Solution

The fourth proportional to 417,900.80, 626,422.26 and 165,078.92 is: 247,448.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,900.80 : 626,422.26 = 165,078.92 : x
  2. Step 2: Convert to fraction form
    417,900.80/626,422.26 = 165,078.92/x
  3. Step 3: Cross multiply
    417,900.80x = 626,422.26 × 165,078.92
  4. Step 4: Simplify right side
    417,900.80x = 103,409,110,144.76
  5. Step 5: Solve for x
    x = 103,409,110,144.76/417,900.80
  6. Step 6: Final answer
    x = 247,448.94

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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.