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Finding the Fourth Proportional to 303,297.08, 455,010.21 and 90,065.61

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Solution

The fourth proportional to 303,297.08, 455,010.21 and 90,065.61 is: 135,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,297.08 : 455,010.21 = 90,065.61 : x
  2. Step 2: Convert to fraction form
    303,297.08/455,010.21 = 90,065.61/x
  3. Step 3: Cross multiply
    303,297.08x = 455,010.21 × 90,065.61
  4. Step 4: Simplify right side
    303,297.08x = 40,980,772,119.88
  5. Step 5: Solve for x
    x = 40,980,772,119.88/303,297.08
  6. Step 6: Final answer
    x = 135,117.60

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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.