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Finding the Fourth Proportional to 405,317.86, 607,135.63 and 236,325.64

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Solution

The fourth proportional to 405,317.86, 607,135.63 and 236,325.64 is: 353,998.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,317.86 : 607,135.63 = 236,325.64 : x
  2. Step 2: Convert to fraction form
    405,317.86/607,135.63 = 236,325.64/x
  3. Step 3: Cross multiply
    405,317.86x = 607,135.63 × 236,325.64
  4. Step 4: Simplify right side
    405,317.86x = 143,481,716,326.55
  5. Step 5: Solve for x
    x = 143,481,716,326.55/405,317.86
  6. Step 6: Final answer
    x = 353,998.01

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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.