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Finding the Fourth Proportional to 336,694.20, 505,041.30 and 87,376.20

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Solution

The fourth proportional to 336,694.20, 505,041.30 and 87,376.20 is: 131,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,694.20 : 505,041.30 = 87,376.20 : x
  2. Step 2: Convert to fraction form
    336,694.20/505,041.30 = 87,376.20/x
  3. Step 3: Cross multiply
    336,694.20x = 505,041.30 × 87,376.20
  4. Step 4: Simplify right side
    336,694.20x = 44,128,589,637.06
  5. Step 5: Solve for x
    x = 44,128,589,637.06/336,694.20
  6. Step 6: Final answer
    x = 131,064.30

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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.