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Finding the Fourth Proportional to 339,576.26, 509,363.85 and 90,258.26

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Solution

The fourth proportional to 339,576.26, 509,363.85 and 90,258.26 is: 135,387.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,576.26 : 509,363.85 = 90,258.26 : x
  2. Step 2: Convert to fraction form
    339,576.26/509,363.85 = 90,258.26/x
  3. Step 3: Cross multiply
    339,576.26x = 509,363.85 × 90,258.26
  4. Step 4: Simplify right side
    339,576.26x = 45,974,294,807.90
  5. Step 5: Solve for x
    x = 45,974,294,807.90/339,576.26
  6. Step 6: Final answer
    x = 135,387.25

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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.