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Finding the Fourth Proportional to 425,615.53, 637,296.99 and 256,910.35

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Solution

The fourth proportional to 425,615.53, 637,296.99 and 256,910.35 is: 384,685.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,615.53 : 637,296.99 = 256,910.35 : x
  2. Step 2: Convert to fraction form
    425,615.53/637,296.99 = 256,910.35/x
  3. Step 3: Cross multiply
    425,615.53x = 637,296.99 × 256,910.35
  4. Step 4: Simplify right side
    425,615.53x = 163,728,192,754.85
  5. Step 5: Solve for x
    x = 163,728,192,754.85/425,615.53
  6. Step 6: Final answer
    x = 384,685.66

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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.