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Finding the Fourth Proportional to 308,034.68, 425,086.05 and 172,068.21

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Solution

The fourth proportional to 308,034.68, 425,086.05 and 172,068.21 is: 237,453.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,034.68 : 425,086.05 = 172,068.21 : x
  2. Step 2: Convert to fraction form
    308,034.68/425,086.05 = 172,068.21/x
  3. Step 3: Cross multiply
    308,034.68x = 425,086.05 × 172,068.21
  4. Step 4: Simplify right side
    308,034.68x = 73,143,795,719.47
  5. Step 5: Solve for x
    x = 73,143,795,719.47/308,034.68
  6. Step 6: Final answer
    x = 237,453.12

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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.