Home / 288,607.63-398,279.04-161,283.21

Finding the Fourth Proportional to 288,607.63, 398,279.04 and 161,283.21

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Solution

The fourth proportional to 288,607.63, 398,279.04 and 161,283.21 is: 222,571.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,607.63 : 398,279.04 = 161,283.21 : x
  2. Step 2: Convert to fraction form
    288,607.63/398,279.04 = 161,283.21/x
  3. Step 3: Cross multiply
    288,607.63x = 398,279.04 × 161,283.21
  4. Step 4: Simplify right side
    288,607.63x = 64,235,722,046.92
  5. Step 5: Solve for x
    x = 64,235,722,046.92/288,607.63
  6. Step 6: Final answer
    x = 222,571.12

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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.