Home / 300,929.76-451,342.80-90,511.20

Finding the Fourth Proportional to 300,929.76, 451,342.80 and 90,511.20

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Solution

The fourth proportional to 300,929.76, 451,342.80 and 90,511.20 is: 135,751.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,929.76 : 451,342.80 = 90,511.20 : x
  2. Step 2: Convert to fraction form
    300,929.76/451,342.80 = 90,511.20/x
  3. Step 3: Cross multiply
    300,929.76x = 451,342.80 × 90,511.20
  4. Step 4: Simplify right side
    300,929.76x = 40,851,578,439.36
  5. Step 5: Solve for x
    x = 40,851,578,439.36/300,929.76
  6. Step 6: Final answer
    x = 135,751.21

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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.