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Finding the Fourth Proportional to 308,903.10, 463,397.85 and 131,408.70

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Solution

The fourth proportional to 308,903.10, 463,397.85 and 131,408.70 is: 197,131.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,903.10 : 463,397.85 = 131,408.70 : x
  2. Step 2: Convert to fraction form
    308,903.10/463,397.85 = 131,408.70/x
  3. Step 3: Cross multiply
    308,903.10x = 463,397.85 × 131,408.70
  4. Step 4: Simplify right side
    308,903.10x = 60,894,509,051.30
  5. Step 5: Solve for x
    x = 60,894,509,051.30/308,903.10
  6. Step 6: Final answer
    x = 197,131.43

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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.