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Finding the Fourth Proportional to 281,701.36, 388,785.10 and 160,815.34

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Solution

The fourth proportional to 281,701.36, 388,785.10 and 160,815.34 is: 221,946.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,701.36 : 388,785.10 = 160,815.34 : x
  2. Step 2: Convert to fraction form
    281,701.36/388,785.10 = 160,815.34/x
  3. Step 3: Cross multiply
    281,701.36x = 388,785.10 × 160,815.34
  4. Step 4: Simplify right side
    281,701.36x = 62,522,606,099.51
  5. Step 5: Solve for x
    x = 62,522,606,099.51/281,701.36
  6. Step 6: Final answer
    x = 221,946.42

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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.