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Finding the Fourth Proportional to 300,535.69, 450,699.74 and 87,245.77

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Solution

The fourth proportional to 300,535.69, 450,699.74 and 87,245.77 is: 130,838.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,535.69 : 450,699.74 = 87,245.77 : x
  2. Step 2: Convert to fraction form
    300,535.69/450,699.74 = 87,245.77/x
  3. Step 3: Cross multiply
    300,535.69x = 450,699.74 × 87,245.77
  4. Step 4: Simplify right side
    300,535.69x = 39,321,643,165.37
  5. Step 5: Solve for x
    x = 39,321,643,165.37/300,535.69
  6. Step 6: Final answer
    x = 130,838.52

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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.