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Finding the Fourth Proportional to 374,455.56, 561,736.38 and 121,655.16

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Solution

The fourth proportional to 374,455.56, 561,736.38 and 121,655.16 is: 182,499.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,455.56 : 561,736.38 = 121,655.16 : x
  2. Step 2: Convert to fraction form
    374,455.56/561,736.38 = 121,655.16/x
  3. Step 3: Cross multiply
    374,455.56x = 561,736.38 × 121,655.16
  4. Step 4: Simplify right side
    374,455.56x = 68,338,129,186.72
  5. Step 5: Solve for x
    x = 68,338,129,186.72/374,455.56
  6. Step 6: Final answer
    x = 182,499.97

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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.