Home / 281,490.16-388,448.82-160,629.28

Finding the Fourth Proportional to 281,490.16, 388,448.82 and 160,629.28

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Solution

The fourth proportional to 281,490.16, 388,448.82 and 160,629.28 is: 221,664.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,490.16 : 388,448.82 = 160,629.28 : x
  2. Step 2: Convert to fraction form
    281,490.16/388,448.82 = 160,629.28/x
  3. Step 3: Cross multiply
    281,490.16x = 388,448.82 × 160,629.28
  4. Step 4: Simplify right side
    281,490.16x = 62,396,254,273.45
  5. Step 5: Solve for x
    x = 62,396,254,273.45/281,490.16
  6. Step 6: Final answer
    x = 221,664.07

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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.