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Finding the Fourth Proportional to 197,720, 272,853.60 and 108,297.92

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Solution

The fourth proportional to 197,720, 272,853.60 and 108,297.92 is: 149,451.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,720 : 272,853.60 = 108,297.92 : x
  2. Step 2: Convert to fraction form
    197,720/272,853.60 = 108,297.92/x
  3. Step 3: Cross multiply
    197,720x = 272,853.60 × 108,297.92
  4. Step 4: Simplify right side
    197,720x = 29,549,477,344.51
  5. Step 5: Solve for x
    x = 29,549,477,344.51/197,720
  6. Step 6: Final answer
    x = 149,451.13

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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.