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Finding the Fourth Proportional to 449,540.77, 620,378.45 and 268,357.90

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Solution

The fourth proportional to 449,540.77, 620,378.45 and 268,357.90 is: 370,341.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,540.77 : 620,378.45 = 268,357.90 : x
  2. Step 2: Convert to fraction form
    449,540.77/620,378.45 = 268,357.90/x
  3. Step 3: Cross multiply
    449,540.77x = 620,378.45 × 268,357.90
  4. Step 4: Simplify right side
    449,540.77x = 166,483,454,945.36
  5. Step 5: Solve for x
    x = 166,483,454,945.36/449,540.77
  6. Step 6: Final answer
    x = 370,341.17

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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.