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Finding the Fourth Proportional to 449,277.90, 620,028.81 and 245,347.80

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Solution

The fourth proportional to 449,277.90, 620,028.81 and 245,347.80 is: 338,593.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,277.90 : 620,028.81 = 245,347.80 : x
  2. Step 2: Convert to fraction form
    449,277.90/620,028.81 = 245,347.80/x
  3. Step 3: Cross multiply
    449,277.90x = 620,028.81 × 245,347.80
  4. Step 4: Simplify right side
    449,277.90x = 152,122,704,470.12
  5. Step 5: Solve for x
    x = 152,122,704,470.12/449,277.90
  6. Step 6: Final answer
    x = 338,593.78

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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.