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Finding the Fourth Proportional to 425,736.39, 637,881.92 and 256,901.97

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Solution

The fourth proportional to 425,736.39, 637,881.92 and 256,901.97 is: 384,916.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,736.39 : 637,881.92 = 256,901.97 : x
  2. Step 2: Convert to fraction form
    425,736.39/637,881.92 = 256,901.97/x
  3. Step 3: Cross multiply
    425,736.39x = 637,881.92 × 256,901.97
  4. Step 4: Simplify right side
    425,736.39x = 163,873,121,875.38
  5. Step 5: Solve for x
    x = 163,873,121,875.38/425,736.39
  6. Step 6: Final answer
    x = 384,916.88

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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.