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Finding the Fourth Proportional to 287,284.52, 430,996.58 and 87,608.45

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Solution

The fourth proportional to 287,284.52, 430,996.58 and 87,608.45 is: 131,433.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,284.52 : 430,996.58 = 87,608.45 : x
  2. Step 2: Convert to fraction form
    287,284.52/430,996.58 = 87,608.45/x
  3. Step 3: Cross multiply
    287,284.52x = 430,996.58 × 87,608.45
  4. Step 4: Simplify right side
    287,284.52x = 37,758,943,297.08
  5. Step 5: Solve for x
    x = 37,758,943,297.08/287,284.52
  6. Step 6: Final answer
    x = 131,433.96

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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.