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Finding the Fourth Proportional to 436,732.68, 655,099.35 and 121,189.89

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Solution

The fourth proportional to 436,732.68, 655,099.35 and 121,189.89 is: 181,784.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,732.68 : 655,099.35 = 121,189.89 : x
  2. Step 2: Convert to fraction form
    436,732.68/655,099.35 = 121,189.89/x
  3. Step 3: Cross multiply
    436,732.68x = 655,099.35 × 121,189.89
  4. Step 4: Simplify right side
    436,732.68x = 79,391,418,165.57
  5. Step 5: Solve for x
    x = 79,391,418,165.57/436,732.68
  6. Step 6: Final answer
    x = 181,784.93

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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.