Home / 287,181.36-430,968.90-100,192.86

Finding the Fourth Proportional to 287,181.36, 430,968.90 and 100,192.86

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Solution

The fourth proportional to 287,181.36, 430,968.90 and 100,192.86 is: 150,357.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,181.36 : 430,968.90 = 100,192.86 : x
  2. Step 2: Convert to fraction form
    287,181.36/430,968.90 = 100,192.86/x
  3. Step 3: Cross multiply
    287,181.36x = 430,968.90 × 100,192.86
  4. Step 4: Simplify right side
    287,181.36x = 43,180,006,662.05
  5. Step 5: Solve for x
    x = 43,180,006,662.05/287,181.36
  6. Step 6: Final answer
    x = 150,357.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.