Home / 287,147.62-430,743.30-87,485.05

Finding the Fourth Proportional to 287,147.62, 430,743.30 and 87,485.05

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Solution

The fourth proportional to 287,147.62, 430,743.30 and 87,485.05 is: 131,234.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,147.62 : 430,743.30 = 87,485.05 : x
  2. Step 2: Convert to fraction form
    287,147.62/430,743.30 = 87,485.05/x
  3. Step 3: Cross multiply
    287,147.62x = 430,743.30 × 87,485.05
  4. Step 4: Simplify right side
    287,147.62x = 37,683,599,137.67
  5. Step 5: Solve for x
    x = 37,683,599,137.67/287,147.62
  6. Step 6: Final answer
    x = 131,234.24

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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.