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Finding the Fourth Proportional to 290,236.77, 435,523.23 and 121,742.10

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Solution

The fourth proportional to 290,236.77, 435,523.23 and 121,742.10 is: 182,683.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,236.77 : 435,523.23 = 121,742.10 : x
  2. Step 2: Convert to fraction form
    290,236.77/435,523.23 = 121,742.10/x
  3. Step 3: Cross multiply
    290,236.77x = 435,523.23 × 121,742.10
  4. Step 4: Simplify right side
    290,236.77x = 53,021,512,618.98
  5. Step 5: Solve for x
    x = 53,021,512,618.98/290,236.77
  6. Step 6: Final answer
    x = 182,683.65

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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.