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Finding the Fourth Proportional to 223,117.29, 308,021.81 and 172,018.44

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Solution

The fourth proportional to 223,117.29, 308,021.81 and 172,018.44 is: 237,477.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,117.29 : 308,021.81 = 172,018.44 : x
  2. Step 2: Convert to fraction form
    223,117.29/308,021.81 = 172,018.44/x
  3. Step 3: Cross multiply
    223,117.29x = 308,021.81 × 172,018.44
  4. Step 4: Simplify right side
    223,117.29x = 52,985,430,382.08
  5. Step 5: Solve for x
    x = 52,985,430,382.08/223,117.29
  6. Step 6: Final answer
    x = 237,477.92

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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.