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Finding the Fourth Proportional to 300,379.06, 450,498.50 and 87,089.73

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Solution

The fourth proportional to 300,379.06, 450,498.50 and 87,089.73 is: 130,614.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,379.06 : 450,498.50 = 87,089.73 : x
  2. Step 2: Convert to fraction form
    300,379.06/450,498.50 = 87,089.73/x
  3. Step 3: Cross multiply
    300,379.06x = 450,498.50 × 87,089.73
  4. Step 4: Simplify right side
    300,379.06x = 39,233,792,730.41
  5. Step 5: Solve for x
    x = 39,233,792,730.41/300,379.06
  6. Step 6: Final answer
    x = 130,614.27

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1.5x scale

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.