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Finding the Fourth Proportional to 223,969.05, 308,968.41 and 143,331.93

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Solution

The fourth proportional to 223,969.05, 308,968.41 and 143,331.93 is: 197,728.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,969.05 : 308,968.41 = 143,331.93 : x
  2. Step 2: Convert to fraction form
    223,969.05/308,968.41 = 143,331.93/x
  3. Step 3: Cross multiply
    223,969.05x = 308,968.41 × 143,331.93
  4. Step 4: Simplify right side
    223,969.05x = 44,285,038,514.33
  5. Step 5: Solve for x
    x = 44,285,038,514.33/223,969.05
  6. Step 6: Final answer
    x = 197,728.38

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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.