Home / 305,616.90-422,176.62-290,670.24

Finding the Fourth Proportional to 305,616.90, 422,176.62 and 290,670.24

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Solution

The fourth proportional to 305,616.90, 422,176.62 and 290,670.24 is: 401,529.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,616.90 : 422,176.62 = 290,670.24 : x
  2. Step 2: Convert to fraction form
    305,616.90/422,176.62 = 290,670.24/x
  3. Step 3: Cross multiply
    305,616.90x = 422,176.62 × 290,670.24
  4. Step 4: Simplify right side
    305,616.90x = 122,714,179,457.79
  5. Step 5: Solve for x
    x = 122,714,179,457.79/305,616.90
  6. Step 6: Final answer
    x = 401,529.43

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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.