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Finding the Fourth Proportional to 308,620.10, 463,126.98 and 131,127.18

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Solution

The fourth proportional to 308,620.10, 463,126.98 and 131,127.18 is: 196,774.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,620.10 : 463,126.98 = 131,127.18 : x
  2. Step 2: Convert to fraction form
    308,620.10/463,126.98 = 131,127.18/x
  3. Step 3: Cross multiply
    308,620.10x = 463,126.98 × 131,127.18
  4. Step 4: Simplify right side
    308,620.10x = 60,728,534,869.32
  5. Step 5: Solve for x
    x = 60,728,534,869.32/308,620.10
  6. Step 6: Final answer
    x = 196,774.40

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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.