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Finding the Fourth Proportional to 425,610.47, 637,289.39 and 256,905.29

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Solution

The fourth proportional to 425,610.47, 637,289.39 and 256,905.29 is: 384,678.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,610.47 : 637,289.39 = 256,905.29 : x
  2. Step 2: Convert to fraction form
    425,610.47/637,289.39 = 256,905.29/x
  3. Step 3: Cross multiply
    425,610.47x = 637,289.39 × 256,905.29
  4. Step 4: Simplify right side
    425,610.47x = 163,723,015,551.87
  5. Step 5: Solve for x
    x = 163,723,015,551.87/425,610.47
  6. Step 6: Final answer
    x = 384,678.07

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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.