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Finding the Fourth Proportional to 425,720.46, 637,858.02 and 256,885.98

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Solution

The fourth proportional to 425,720.46, 637,858.02 and 256,885.98 is: 384,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,720.46 : 637,858.02 = 256,885.98 : x
  2. Step 2: Convert to fraction form
    425,720.46/637,858.02 = 256,885.98/x
  3. Step 3: Cross multiply
    425,720.46x = 637,858.02 × 256,885.98
  4. Step 4: Simplify right side
    425,720.46x = 163,856,782,568.56
  5. Step 5: Solve for x
    x = 163,856,782,568.56/425,720.46
  6. Step 6: Final answer
    x = 384,892.90

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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.