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Finding the Fourth Proportional to 436,765.64, 655,148.24 and 121,222.46

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Solution

The fourth proportional to 436,765.64, 655,148.24 and 121,222.46 is: 181,833.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,765.64 : 655,148.24 = 121,222.46 : x
  2. Step 2: Convert to fraction form
    436,765.64/655,148.24 = 121,222.46/x
  3. Step 3: Cross multiply
    436,765.64x = 655,148.24 × 121,222.46
  4. Step 4: Simplify right side
    436,765.64x = 79,418,681,317.47
  5. Step 5: Solve for x
    x = 79,418,681,317.47/436,765.64
  6. Step 6: Final answer
    x = 181,833.63

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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.