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Finding the Fourth Proportional to 300,510.76, 450,853.98 and 90,180.04

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Solution

The fourth proportional to 300,510.76, 450,853.98 and 90,180.04 is: 135,296.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,510.76 : 450,853.98 = 90,180.04 : x
  2. Step 2: Convert to fraction form
    300,510.76/450,853.98 = 90,180.04/x
  3. Step 3: Cross multiply
    300,510.76x = 450,853.98 × 90,180.04
  4. Step 4: Simplify right side
    300,510.76x = 40,658,029,950.56
  5. Step 5: Solve for x
    x = 40,658,029,950.56/300,510.76
  6. Step 6: Final answer
    x = 135,296.42

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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.