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Finding the Fourth Proportional to 221,943, 306,282.42 and 121,341

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Solution

The fourth proportional to 221,943, 306,282.42 and 121,341 is: 167,451.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,943 : 306,282.42 = 121,341 : x
  2. Step 2: Convert to fraction form
    221,943/306,282.42 = 121,341/x
  3. Step 3: Cross multiply
    221,943x = 306,282.42 × 121,341
  4. Step 4: Simplify right side
    221,943x = 37,164,615,125.22
  5. Step 5: Solve for x
    x = 37,164,615,125.22/221,943
  6. Step 6: Final answer
    x = 167,451.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.