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Finding the Fourth Proportional to 256,672.48, 384,979.30 and 67,151.14

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Solution

The fourth proportional to 256,672.48, 384,979.30 and 67,151.14 is: 100,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,672.48 : 384,979.30 = 67,151.14 : x
  2. Step 2: Convert to fraction form
    256,672.48/384,979.30 = 67,151.14/x
  3. Step 3: Cross multiply
    256,672.48x = 384,979.30 × 67,151.14
  4. Step 4: Simplify right side
    256,672.48x = 25,851,796,946.51
  5. Step 5: Solve for x
    x = 25,851,796,946.51/256,672.48
  6. Step 6: Final answer
    x = 100,719.01

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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.