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Finding the Fourth Proportional to 223,857.69, 308,838.94 and 143,272.20

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Solution

The fourth proportional to 223,857.69, 308,838.94 and 143,272.20 is: 197,661.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,857.69 : 308,838.94 = 143,272.20 : x
  2. Step 2: Convert to fraction form
    223,857.69/308,838.94 = 143,272.20/x
  3. Step 3: Cross multiply
    223,857.69x = 308,838.94 × 143,272.20
  4. Step 4: Simplify right side
    223,857.69x = 44,248,034,379.47
  5. Step 5: Solve for x
    x = 44,248,034,379.47/223,857.69
  6. Step 6: Final answer
    x = 197,661.44

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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.