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Finding the Fourth Proportional to 425,487.35, 638,237.64 and 125,998.22

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Solution

The fourth proportional to 425,487.35, 638,237.64 and 125,998.22 is: 188,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,487.35 : 638,237.64 = 125,998.22 : x
  2. Step 2: Convert to fraction form
    425,487.35/638,237.64 = 125,998.22/x
  3. Step 3: Cross multiply
    425,487.35x = 638,237.64 × 125,998.22
  4. Step 4: Simplify right side
    425,487.35x = 80,416,806,577.00
  5. Step 5: Solve for x
    x = 80,416,806,577.00/425,487.35
  6. Step 6: Final answer
    x = 188,999.29

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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.