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Finding the Fourth Proportional to 336,978.36, 505,218.06 and 159,277.86

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Solution

The fourth proportional to 336,978.36, 505,218.06 and 159,277.86 is: 238,798.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,978.36 : 505,218.06 = 159,277.86 : x
  2. Step 2: Convert to fraction form
    336,978.36/505,218.06 = 159,277.86/x
  3. Step 3: Cross multiply
    336,978.36x = 505,218.06 × 159,277.86
  4. Step 4: Simplify right side
    336,978.36x = 80,470,051,430.15
  5. Step 5: Solve for x
    x = 80,470,051,430.15/336,978.36
  6. Step 6: Final answer
    x = 238,798.87

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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.