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Finding the Fourth Proportional to 303,563.80, 455,266.31 and 90,274.23

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Solution

The fourth proportional to 303,563.80, 455,266.31 and 90,274.23 is: 135,387.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,563.80 : 455,266.31 = 90,274.23 : x
  2. Step 2: Convert to fraction form
    303,563.80/455,266.31 = 90,274.23/x
  3. Step 3: Cross multiply
    303,563.80x = 455,266.31 × 90,274.23
  4. Step 4: Simplify right side
    303,563.80x = 41,098,817,430.32
  5. Step 5: Solve for x
    x = 41,098,817,430.32/303,563.80
  6. Step 6: Final answer
    x = 135,387.74

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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.