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Finding the Fourth Proportional to 223,385.91, 308,274.93 and 121,411.38

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Solution

The fourth proportional to 223,385.91, 308,274.93 and 121,411.38 is: 167,548.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,385.91 : 308,274.93 = 121,411.38 : x
  2. Step 2: Convert to fraction form
    223,385.91/308,274.93 = 121,411.38/x
  3. Step 3: Cross multiply
    223,385.91x = 308,274.93 × 121,411.38
  4. Step 4: Simplify right side
    223,385.91x = 37,428,084,447.51
  5. Step 5: Solve for x
    x = 37,428,084,447.51/223,385.91
  6. Step 6: Final answer
    x = 167,548.99

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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.