Home / 306,046.48-422,164.20-215,533.84

Finding the Fourth Proportional to 306,046.48, 422,164.20 and 215,533.84

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Solution

The fourth proportional to 306,046.48, 422,164.20 and 215,533.84 is: 297,309.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,046.48 : 422,164.20 = 215,533.84 : x
  2. Step 2: Convert to fraction form
    306,046.48/422,164.20 = 215,533.84/x
  3. Step 3: Cross multiply
    306,046.48x = 422,164.20 × 215,533.84
  4. Step 4: Simplify right side
    306,046.48x = 90,990,671,136.53
  5. Step 5: Solve for x
    x = 90,990,671,136.53/306,046.48
  6. Step 6: Final answer
    x = 297,309.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.