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Finding the Fourth Proportional to 308,020.14, 425,066.70 and 178,977.42

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Solution

The fourth proportional to 308,020.14, 425,066.70 and 178,977.42 is: 246,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,020.14 : 425,066.70 = 178,977.42 : x
  2. Step 2: Convert to fraction form
    308,020.14/425,066.70 = 178,977.42/x
  3. Step 3: Cross multiply
    308,020.14x = 425,066.70 × 178,977.42
  4. Step 4: Simplify right side
    308,020.14x = 76,077,341,293.91
  5. Step 5: Solve for x
    x = 76,077,341,293.91/308,020.14
  6. Step 6: Final answer
    x = 246,988.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.