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Finding the Fourth Proportional to 374,358.40, 561,274.59 and 131,139.97

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Solution

The fourth proportional to 374,358.40, 561,274.59 and 131,139.97 is: 196,617.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,358.40 : 561,274.59 = 131,139.97 : x
  2. Step 2: Convert to fraction form
    374,358.40/561,274.59 = 131,139.97/x
  3. Step 3: Cross multiply
    374,358.40x = 561,274.59 × 131,139.97
  4. Step 4: Simplify right side
    374,358.40x = 73,605,532,894.36
  5. Step 5: Solve for x
    x = 73,605,532,894.36/374,358.40
  6. Step 6: Final answer
    x = 196,617.82

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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.