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Finding the Fourth Proportional to 425,608.47, 637,286.39 and 256,903.29

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Solution

The fourth proportional to 425,608.47, 637,286.39 and 256,903.29 is: 384,675.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,608.47 : 637,286.39 = 256,903.29 : x
  2. Step 2: Convert to fraction form
    425,608.47/637,286.39 = 256,903.29/x
  3. Step 3: Cross multiply
    425,608.47x = 637,286.39 × 256,903.29
  4. Step 4: Simplify right side
    425,608.47x = 163,720,970,263.22
  5. Step 5: Solve for x
    x = 163,720,970,263.22/425,608.47
  6. Step 6: Final answer
    x = 384,675.08

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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.