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Finding the Fourth Proportional to 308,907.10, 463,403.85 and 131,412.70

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Solution

The fourth proportional to 308,907.10, 463,403.85 and 131,412.70 is: 197,137.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,907.10 : 463,403.85 = 131,412.70 : x
  2. Step 2: Convert to fraction form
    308,907.10/463,403.85 = 131,412.70/x
  3. Step 3: Cross multiply
    308,907.10x = 463,403.85 × 131,412.70
  4. Step 4: Simplify right side
    308,907.10x = 60,897,151,118.90
  5. Step 5: Solve for x
    x = 60,897,151,118.90/308,907.10
  6. Step 6: Final answer
    x = 197,137.43

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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.