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Finding the Fourth Proportional to 217,741.41, 300,478.71 and 122,248.11

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Solution

The fourth proportional to 217,741.41, 300,478.71 and 122,248.11 is: 168,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,741.41 : 300,478.71 = 122,248.11 : x
  2. Step 2: Convert to fraction form
    217,741.41/300,478.71 = 122,248.11/x
  3. Step 3: Cross multiply
    217,741.41x = 300,478.71 × 122,248.11
  4. Step 4: Simplify right side
    217,741.41x = 36,732,954,392.74
  5. Step 5: Solve for x
    x = 36,732,954,392.74/217,741.41
  6. Step 6: Final answer
    x = 168,699.90

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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.