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Finding the Fourth Proportional to 425,887.01, 639,114.59 and 220,910.57

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Solution

The fourth proportional to 425,887.01, 639,114.59 and 220,910.57 is: 331,513.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,887.01 : 639,114.59 = 220,910.57 : x
  2. Step 2: Convert to fraction form
    425,887.01/639,114.59 = 220,910.57/x
  3. Step 3: Cross multiply
    425,887.01x = 639,114.59 × 220,910.57
  4. Step 4: Simplify right side
    425,887.01x = 141,187,168,372.22
  5. Step 5: Solve for x
    x = 141,187,168,372.22/425,887.01
  6. Step 6: Final answer
    x = 331,513.21

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1.5x scale

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.