Home / 287,113.82-430,735.02-87,449.83

Finding the Fourth Proportional to 287,113.82, 430,735.02 and 87,449.83

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Solution

The fourth proportional to 287,113.82, 430,735.02 and 87,449.83 is: 131,194.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,113.82 : 430,735.02 = 87,449.83 : x
  2. Step 2: Convert to fraction form
    287,113.82/430,735.02 = 87,449.83/x
  3. Step 3: Cross multiply
    287,113.82x = 430,735.02 × 87,449.83
  4. Step 4: Simplify right side
    287,113.82x = 37,667,702,869.27
  5. Step 5: Solve for x
    x = 37,667,702,869.27/287,113.82
  6. Step 6: Final answer
    x = 131,194.32

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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.