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Finding the Fourth Proportional to 303,549.90, 455,245.48 and 90,260.37

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Solution

The fourth proportional to 303,549.90, 455,245.48 and 90,260.37 is: 135,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,549.90 : 455,245.48 = 90,260.37 : x
  2. Step 2: Convert to fraction form
    303,549.90/455,245.48 = 90,260.37/x
  3. Step 3: Cross multiply
    303,549.90x = 455,245.48 × 90,260.37
  4. Step 4: Simplify right side
    303,549.90x = 41,090,625,465.63
  5. Step 5: Solve for x
    x = 41,090,625,465.63/303,549.90
  6. Step 6: Final answer
    x = 135,366.95

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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.