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Finding the Fourth Proportional to 426,451.96, 640,064.85 and 226,940.32

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Solution

The fourth proportional to 426,451.96, 640,064.85 and 226,940.32 is: 340,616.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,451.96 : 640,064.85 = 226,940.32 : x
  2. Step 2: Convert to fraction form
    426,451.96/640,064.85 = 226,940.32/x
  3. Step 3: Cross multiply
    426,451.96x = 640,064.85 × 226,940.32
  4. Step 4: Simplify right side
    426,451.96x = 145,256,521,879.75
  5. Step 5: Solve for x
    x = 145,256,521,879.75/426,451.96
  6. Step 6: Final answer
    x = 340,616.38

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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.