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Finding the Fourth Proportional to 339,587.01, 509,379.93 and 90,269.01

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Solution

The fourth proportional to 339,587.01, 509,379.93 and 90,269.01 is: 135,403.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,587.01 : 509,379.93 = 90,269.01 : x
  2. Step 2: Convert to fraction form
    339,587.01/509,379.93 = 90,269.01/x
  3. Step 3: Cross multiply
    339,587.01x = 509,379.93 × 90,269.01
  4. Step 4: Simplify right side
    339,587.01x = 45,981,221,994.97
  5. Step 5: Solve for x
    x = 45,981,221,994.97/339,587.01
  6. Step 6: Final answer
    x = 135,403.36

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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.