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Finding the Fourth Proportional to 308,975.80, 463,463.70 and 143,087.80

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Solution

The fourth proportional to 308,975.80, 463,463.70 and 143,087.80 is: 214,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,975.80 : 463,463.70 = 143,087.80 : x
  2. Step 2: Convert to fraction form
    308,975.80/463,463.70 = 143,087.80/x
  3. Step 3: Cross multiply
    308,975.80x = 463,463.70 × 143,087.80
  4. Step 4: Simplify right side
    308,975.80x = 66,316,001,212.86
  5. Step 5: Solve for x
    x = 66,316,001,212.86/308,975.80
  6. Step 6: Final answer
    x = 214,631.70

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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.