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Finding the Fourth Proportional to 336,965.66, 505,438.77 and 87,647.66

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Solution

The fourth proportional to 336,965.66, 505,438.77 and 87,647.66 is: 131,468.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,965.66 : 505,438.77 = 87,647.66 : x
  2. Step 2: Convert to fraction form
    336,965.66/505,438.77 = 87,647.66/x
  3. Step 3: Cross multiply
    336,965.66x = 505,438.77 × 87,647.66
  4. Step 4: Simplify right side
    336,965.66x = 44,300,525,463.78
  5. Step 5: Solve for x
    x = 44,300,525,463.78/336,965.66
  6. Step 6: Final answer
    x = 131,468.96

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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.