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Finding the Fourth Proportional to 436,765.02, 655,147.32 and 121,221.82

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Solution

The fourth proportional to 436,765.02, 655,147.32 and 121,221.82 is: 181,832.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,765.02 : 655,147.32 = 121,221.82 : x
  2. Step 2: Convert to fraction form
    436,765.02/655,147.32 = 121,221.82/x
  3. Step 3: Cross multiply
    436,765.02x = 655,147.32 × 121,221.82
  4. Step 4: Simplify right side
    436,765.02x = 79,418,150,498.52
  5. Step 5: Solve for x
    x = 79,418,150,498.52/436,765.02
  6. Step 6: Final answer
    x = 181,832.67

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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.