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Finding the Fourth Proportional to 308,082.14, 425,111.28 and 172,099.27

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Solution

The fourth proportional to 308,082.14, 425,111.28 and 172,099.27 is: 237,473.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,082.14 : 425,111.28 = 172,099.27 : x
  2. Step 2: Convert to fraction form
    308,082.14/425,111.28 = 172,099.27/x
  3. Step 3: Cross multiply
    308,082.14x = 425,111.28 × 172,099.27
  4. Step 4: Simplify right side
    308,082.14x = 73,161,340,956.77
  5. Step 5: Solve for x
    x = 73,161,340,956.77/308,082.14
  6. Step 6: Final answer
    x = 237,473.49

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1.5x scale

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.