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Finding the Fourth Proportional to 281,479.97, 388,470.09 and 160,639.45

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Solution

The fourth proportional to 281,479.97, 388,470.09 and 160,639.45 is: 221,698.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,479.97 : 388,470.09 = 160,639.45 : x
  2. Step 2: Convert to fraction form
    281,479.97/388,470.09 = 160,639.45/x
  3. Step 3: Cross multiply
    281,479.97x = 388,470.09 × 160,639.45
  4. Step 4: Simplify right side
    281,479.97x = 62,403,621,230.27
  5. Step 5: Solve for x
    x = 62,403,621,230.27/281,479.97
  6. Step 6: Final answer
    x = 221,698.26

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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.