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Finding the Fourth Proportional to 285,589.80, 428,244.75 and 117,064.29

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Solution

The fourth proportional to 285,589.80, 428,244.75 and 117,064.29 is: 175,539.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,589.80 : 428,244.75 = 117,064.29 : x
  2. Step 2: Convert to fraction form
    285,589.80/428,244.75 = 117,064.29/x
  3. Step 3: Cross multiply
    285,589.80x = 428,244.75 × 117,064.29
  4. Step 4: Simplify right side
    285,589.80x = 50,132,167,604.98
  5. Step 5: Solve for x
    x = 50,132,167,604.98/285,589.80
  6. Step 6: Final answer
    x = 175,539.07

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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.