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Finding the Fourth Proportional to 374,540.79, 561,867.11 and 137,865.48

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Solution

The fourth proportional to 374,540.79, 561,867.11 and 137,865.48 is: 206,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,540.79 : 561,867.11 = 137,865.48 : x
  2. Step 2: Convert to fraction form
    374,540.79/561,867.11 = 137,865.48/x
  3. Step 3: Cross multiply
    374,540.79x = 561,867.11 × 137,865.48
  4. Step 4: Simplify right side
    374,540.79x = 77,462,078,127.04
  5. Step 5: Solve for x
    x = 77,462,078,127.04/374,540.79
  6. Step 6: Final answer
    x = 206,818.80

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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.