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Finding the Fourth Proportional to 243,379.49, 335,645.51 and 202,678.39

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Solution

The fourth proportional to 243,379.49, 335,645.51 and 202,678.39 is: 279,514.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,379.49 : 335,645.51 = 202,678.39 : x
  2. Step 2: Convert to fraction form
    243,379.49/335,645.51 = 202,678.39/x
  3. Step 3: Cross multiply
    243,379.49x = 335,645.51 × 202,678.39
  4. Step 4: Simplify right side
    243,379.49x = 68,028,089,095.69
  5. Step 5: Solve for x
    x = 68,028,089,095.69/243,379.49
  6. Step 6: Final answer
    x = 279,514.48

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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.