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Finding the Fourth Proportional to 339,582.28, 509,372.80 and 90,264.28

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Solution

The fourth proportional to 339,582.28, 509,372.80 and 90,264.28 is: 135,396.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,582.28 : 509,372.80 = 90,264.28 : x
  2. Step 2: Convert to fraction form
    339,582.28/509,372.80 = 90,264.28/x
  3. Step 3: Cross multiply
    339,582.28x = 509,372.80 × 90,264.28
  4. Step 4: Simplify right side
    339,582.28x = 45,978,169,043.58
  5. Step 5: Solve for x
    x = 45,978,169,043.58/339,582.28
  6. Step 6: Final answer
    x = 135,396.26

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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.