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Finding the Fourth Proportional to 339,591.56, 509,404.77 and 86,874.23

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Solution

The fourth proportional to 339,591.56, 509,404.77 and 86,874.23 is: 130,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,591.56 : 509,404.77 = 86,874.23 : x
  2. Step 2: Convert to fraction form
    339,591.56/509,404.77 = 86,874.23/x
  3. Step 3: Cross multiply
    339,591.56x = 509,404.77 × 86,874.23
  4. Step 4: Simplify right side
    339,591.56x = 44,254,144,605.05
  5. Step 5: Solve for x
    x = 44,254,144,605.05/339,591.56
  6. Step 6: Final answer
    x = 130,315.80

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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.