Home / 305,923.80-422,180.20-169,970.16

Finding the Fourth Proportional to 305,923.80, 422,180.20 and 169,970.16

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Solution

The fourth proportional to 305,923.80, 422,180.20 and 169,970.16 is: 234,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,923.80 : 422,180.20 = 169,970.16 : x
  2. Step 2: Convert to fraction form
    305,923.80/422,180.20 = 169,970.16/x
  3. Step 3: Cross multiply
    305,923.80x = 422,180.20 × 169,970.16
  4. Step 4: Simplify right side
    305,923.80x = 71,758,036,142.83
  5. Step 5: Solve for x
    x = 71,758,036,142.83/305,923.80
  6. Step 6: Final answer
    x = 234,561.80

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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.