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Finding the Fourth Proportional to 300,039.44, 450,075.69 and 89,693.78

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Solution

The fourth proportional to 300,039.44, 450,075.69 and 89,693.78 is: 134,545.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,039.44 : 450,075.69 = 89,693.78 : x
  2. Step 2: Convert to fraction form
    300,039.44/450,075.69 = 89,693.78/x
  3. Step 3: Cross multiply
    300,039.44x = 450,075.69 × 89,693.78
  4. Step 4: Simplify right side
    300,039.44x = 40,368,987,671.83
  5. Step 5: Solve for x
    x = 40,368,987,671.83/300,039.44
  6. Step 6: Final answer
    x = 134,545.61

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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.