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Finding the Fourth Proportional to 339,578.01, 509,366.48 and 90,260.01

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Solution

The fourth proportional to 339,578.01, 509,366.48 and 90,260.01 is: 135,389.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,578.01 : 509,366.48 = 90,260.01 : x
  2. Step 2: Convert to fraction form
    339,578.01/509,366.48 = 90,260.01/x
  3. Step 3: Cross multiply
    339,578.01x = 509,366.48 × 90,260.01
  4. Step 4: Simplify right side
    339,578.01x = 45,975,423,127.16
  5. Step 5: Solve for x
    x = 45,975,423,127.16/339,578.01
  6. Step 6: Final answer
    x = 135,389.87

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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.