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Finding the Fourth Proportional to 217,429.36, 300,055 and 120,635.01

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Solution

The fourth proportional to 217,429.36, 300,055 and 120,635.01 is: 166,477.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,429.36 : 300,055 = 120,635.01 : x
  2. Step 2: Convert to fraction form
    217,429.36/300,055 = 120,635.01/x
  3. Step 3: Cross multiply
    217,429.36x = 300,055 × 120,635.01
  4. Step 4: Simplify right side
    217,429.36x = 36,197,137,925.55
  5. Step 5: Solve for x
    x = 36,197,137,925.55/217,429.36
  6. Step 6: Final answer
    x = 166,477.69

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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.