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Finding the Fourth Proportional to 303,555.65, 455,254.08 and 90,266.15

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Solution

The fourth proportional to 303,555.65, 455,254.08 and 90,266.15 is: 135,375.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,555.65 : 455,254.08 = 90,266.15 : x
  2. Step 2: Convert to fraction form
    303,555.65/455,254.08 = 90,266.15/x
  3. Step 3: Cross multiply
    303,555.65x = 455,254.08 × 90,266.15
  4. Step 4: Simplify right side
    303,555.65x = 41,094,030,797.12
  5. Step 5: Solve for x
    x = 41,094,030,797.12/303,555.65
  6. Step 6: Final answer
    x = 135,375.61

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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.