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Finding the Fourth Proportional to 217,411.96, 300,028.44 and 121,918.36

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Solution

The fourth proportional to 217,411.96, 300,028.44 and 121,918.36 is: 168,247.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,411.96 : 300,028.44 = 121,918.36 : x
  2. Step 2: Convert to fraction form
    217,411.96/300,028.44 = 121,918.36/x
  3. Step 3: Cross multiply
    217,411.96x = 300,028.44 × 121,918.36
  4. Step 4: Simplify right side
    217,411.96x = 36,578,975,358.16
  5. Step 5: Solve for x
    x = 36,578,975,358.16/217,411.96
  6. Step 6: Final answer
    x = 168,247.30

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1.5x scale

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.