Home / 288,623.24-398,317.75-161,309

Finding the Fourth Proportional to 288,623.24, 398,317.75 and 161,309

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Solution

The fourth proportional to 288,623.24, 398,317.75 and 161,309 is: 222,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,623.24 : 398,317.75 = 161,309 : x
  2. Step 2: Convert to fraction form
    288,623.24/398,317.75 = 161,309/x
  3. Step 3: Cross multiply
    288,623.24x = 398,317.75 × 161,309
  4. Step 4: Simplify right side
    288,623.24x = 64,252,237,934.75
  5. Step 5: Solve for x
    x = 64,252,237,934.75/288,623.24
  6. Step 6: Final answer
    x = 222,616.30

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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.