Home / 287,020.80-430,546.08-87,325.44

Finding the Fourth Proportional to 287,020.80, 430,546.08 and 87,325.44

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Solution

The fourth proportional to 287,020.80, 430,546.08 and 87,325.44 is: 130,992.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,020.80 : 430,546.08 = 87,325.44 : x
  2. Step 2: Convert to fraction form
    287,020.80/430,546.08 = 87,325.44/x
  3. Step 3: Cross multiply
    287,020.80x = 430,546.08 × 87,325.44
  4. Step 4: Simplify right side
    287,020.80x = 37,597,625,876.28
  5. Step 5: Solve for x
    x = 37,597,625,876.28/287,020.80
  6. Step 6: Final answer
    x = 130,992.69

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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.