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Finding the Fourth Proportional to 243,405.44, 335,902.08 and 142,805.12

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Solution

The fourth proportional to 243,405.44, 335,902.08 and 142,805.12 is: 197,072.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,405.44 : 335,902.08 = 142,805.12 : x
  2. Step 2: Convert to fraction form
    243,405.44/335,902.08 = 142,805.12/x
  3. Step 3: Cross multiply
    243,405.44x = 335,902.08 × 142,805.12
  4. Step 4: Simplify right side
    243,405.44x = 47,968,536,842.65
  5. Step 5: Solve for x
    x = 47,968,536,842.65/243,405.44
  6. Step 6: Final answer
    x = 197,072.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.