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Finding the Fourth Proportional to 420,466.50, 630,910.26 and 192,737.25

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Solution

The fourth proportional to 420,466.50, 630,910.26 and 192,737.25 is: 289,202.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,466.50 : 630,910.26 = 192,737.25 : x
  2. Step 2: Convert to fraction form
    420,466.50/630,910.26 = 192,737.25/x
  3. Step 3: Cross multiply
    420,466.50x = 630,910.26 × 192,737.25
  4. Step 4: Simplify right side
    420,466.50x = 121,599,908,509.19
  5. Step 5: Solve for x
    x = 121,599,908,509.19/420,466.50
  6. Step 6: Final answer
    x = 289,202.37

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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.