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Finding the Fourth Proportional to 426,550.57, 640,219.46 and 216,336.13

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Solution

The fourth proportional to 426,550.57, 640,219.46 and 216,336.13 is: 324,703.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,550.57 : 640,219.46 = 216,336.13 : x
  2. Step 2: Convert to fraction form
    426,550.57/640,219.46 = 216,336.13/x
  3. Step 3: Cross multiply
    426,550.57x = 640,219.46 × 216,336.13
  4. Step 4: Simplify right side
    426,550.57x = 138,502,599,245.41
  5. Step 5: Solve for x
    x = 138,502,599,245.41/426,550.57
  6. Step 6: Final answer
    x = 324,703.82

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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.