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Finding the Fourth Proportional to 423,340.56, 635,017.32 and 107,803.44

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Solution

The fourth proportional to 423,340.56, 635,017.32 and 107,803.44 is: 161,706.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,340.56 : 635,017.32 = 107,803.44 : x
  2. Step 2: Convert to fraction form
    423,340.56/635,017.32 = 107,803.44/x
  3. Step 3: Cross multiply
    423,340.56x = 635,017.32 × 107,803.44
  4. Step 4: Simplify right side
    423,340.56x = 68,457,051,555.58
  5. Step 5: Solve for x
    x = 68,457,051,555.58/423,340.56
  6. Step 6: Final answer
    x = 161,706.81

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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.