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Finding the Fourth Proportional to 217,478.18, 300,099.72 and 121,966.42

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Solution

The fourth proportional to 217,478.18, 300,099.72 and 121,966.42 is: 168,302.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,478.18 : 300,099.72 = 121,966.42 : x
  2. Step 2: Convert to fraction form
    217,478.18/300,099.72 = 121,966.42/x
  3. Step 3: Cross multiply
    217,478.18x = 300,099.72 × 121,966.42
  4. Step 4: Simplify right side
    217,478.18x = 36,602,088,491.40
  5. Step 5: Solve for x
    x = 36,602,088,491.40/217,478.18
  6. Step 6: Final answer
    x = 168,302.35

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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.