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Finding the Fourth Proportional to 449,747.59, 620,650.63 and 256,155.26

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Solution

The fourth proportional to 449,747.59, 620,650.63 and 256,155.26 is: 353,493.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,747.59 : 620,650.63 = 256,155.26 : x
  2. Step 2: Convert to fraction form
    449,747.59/620,650.63 = 256,155.26/x
  3. Step 3: Cross multiply
    449,747.59x = 620,650.63 × 256,155.26
  4. Step 4: Simplify right side
    449,747.59x = 158,982,923,484.48
  5. Step 5: Solve for x
    x = 158,982,923,484.48/449,747.59
  6. Step 6: Final answer
    x = 353,493.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.