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Finding the Fourth Proportional to 270,590.72, 405,771.93 and 81,078.02

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Solution

The fourth proportional to 270,590.72, 405,771.93 and 81,078.02 is: 121,582.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,590.72 : 405,771.93 = 81,078.02 : x
  2. Step 2: Convert to fraction form
    270,590.72/405,771.93 = 81,078.02/x
  3. Step 3: Cross multiply
    270,590.72x = 405,771.93 × 81,078.02
  4. Step 4: Simplify right side
    270,590.72x = 32,899,184,655.98
  5. Step 5: Solve for x
    x = 32,899,184,655.98/270,590.72
  6. Step 6: Final answer
    x = 121,582.83

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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.