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Finding the Fourth Proportional to 425,736.54, 638,607.33 and 126,219.74

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Solution

The fourth proportional to 425,736.54, 638,607.33 and 126,219.74 is: 189,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,736.54 : 638,607.33 = 126,219.74 : x
  2. Step 2: Convert to fraction form
    425,736.54/638,607.33 = 126,219.74/x
  3. Step 3: Cross multiply
    425,736.54x = 638,607.33 × 126,219.74
  4. Step 4: Simplify right side
    425,736.54x = 80,604,847,961.66
  5. Step 5: Solve for x
    x = 80,604,847,961.66/425,736.54
  6. Step 6: Final answer
    x = 189,330.35

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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.