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Finding the Fourth Proportional to 449,274.15, 620,023.64 and 245,344.05

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Solution

The fourth proportional to 449,274.15, 620,023.64 and 245,344.05 is: 338,588.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,274.15 : 620,023.64 = 245,344.05 : x
  2. Step 2: Convert to fraction form
    449,274.15/620,023.64 = 245,344.05/x
  3. Step 3: Cross multiply
    449,274.15x = 620,023.64 × 245,344.05
  4. Step 4: Simplify right side
    449,274.15x = 152,119,109,706.62
  5. Step 5: Solve for x
    x = 152,119,109,706.62/449,274.15
  6. Step 6: Final answer
    x = 338,588.61

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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.