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Finding the Fourth Proportional to 303,549.12, 455,244.32 and 90,259.59

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Solution

The fourth proportional to 303,549.12, 455,244.32 and 90,259.59 is: 135,365.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,549.12 : 455,244.32 = 90,259.59 : x
  2. Step 2: Convert to fraction form
    303,549.12/455,244.32 = 90,259.59/x
  3. Step 3: Cross multiply
    303,549.12x = 455,244.32 × 90,259.59
  4. Step 4: Simplify right side
    303,549.12x = 41,090,165,221.73
  5. Step 5: Solve for x
    x = 41,090,165,221.73/303,549.12
  6. Step 6: Final answer
    x = 135,365.79

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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.