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Finding the Fourth Proportional to 436,960, 655,475.56 and 121,416.92

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Solution

The fourth proportional to 436,960, 655,475.56 and 121,416.92 is: 182,135.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,960 : 655,475.56 = 121,416.92 : x
  2. Step 2: Convert to fraction form
    436,960/655,475.56 = 121,416.92/x
  3. Step 3: Cross multiply
    436,960x = 655,475.56 × 121,416.92
  4. Step 4: Simplify right side
    436,960x = 79,585,823,630.48
  5. Step 5: Solve for x
    x = 79,585,823,630.48/436,960
  6. Step 6: Final answer
    x = 182,135.26

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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.