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Finding the Fourth Proportional to 281,792.26, 388,873.32 and 154,465.12

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Solution

The fourth proportional to 281,792.26, 388,873.32 and 154,465.12 is: 213,161.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,792.26 : 388,873.32 = 154,465.12 : x
  2. Step 2: Convert to fraction form
    281,792.26/388,873.32 = 154,465.12/x
  3. Step 3: Cross multiply
    281,792.26x = 388,873.32 × 154,465.12
  4. Step 4: Simplify right side
    281,792.26x = 60,067,362,094.23
  5. Step 5: Solve for x
    x = 60,067,362,094.23/281,792.26
  6. Step 6: Final answer
    x = 213,161.86

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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.