Home / 281,200.75-388,064.66-172,303.20

Finding the Fourth Proportional to 281,200.75, 388,064.66 and 172,303.20

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Solution

The fourth proportional to 281,200.75, 388,064.66 and 172,303.20 is: 237,783.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,200.75 : 388,064.66 = 172,303.20 : x
  2. Step 2: Convert to fraction form
    281,200.75/388,064.66 = 172,303.20/x
  3. Step 3: Cross multiply
    281,200.75x = 388,064.66 × 172,303.20
  4. Step 4: Simplify right side
    281,200.75x = 66,864,781,863.40
  5. Step 5: Solve for x
    x = 66,864,781,863.40/281,200.75
  6. Step 6: Final answer
    x = 237,783.09

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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.