Home / 287,020.90-430,298.07-100,163.62

Finding the Fourth Proportional to 287,020.90, 430,298.07 and 100,163.62

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Solution

The fourth proportional to 287,020.90, 430,298.07 and 100,163.62 is: 150,164.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,020.90 : 430,298.07 = 100,163.62 : x
  2. Step 2: Convert to fraction form
    287,020.90/430,298.07 = 100,163.62/x
  3. Step 3: Cross multiply
    287,020.90x = 430,298.07 × 100,163.62
  4. Step 4: Simplify right side
    287,020.90x = 43,100,212,370.21
  5. Step 5: Solve for x
    x = 43,100,212,370.21/287,020.90
  6. Step 6: Final answer
    x = 150,164.02

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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.