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Finding the Fourth Proportional to 300,379.19, 450,498.69 and 87,089.85

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Solution

The fourth proportional to 300,379.19, 450,498.69 and 87,089.85 is: 130,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,379.19 : 450,498.69 = 87,089.85 : x
  2. Step 2: Convert to fraction form
    300,379.19/450,498.69 = 87,089.85/x
  3. Step 3: Cross multiply
    300,379.19x = 450,498.69 × 87,089.85
  4. Step 4: Simplify right side
    300,379.19x = 39,233,863,337.30
  5. Step 5: Solve for x
    x = 39,233,863,337.30/300,379.19
  6. Step 6: Final answer
    x = 130,614.45

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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.