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Finding the Fourth Proportional to 217,399.80, 326,261.70 and 112,164.60

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Solution

The fourth proportional to 217,399.80, 326,261.70 and 112,164.60 is: 168,330.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,399.80 : 326,261.70 = 112,164.60 : x
  2. Step 2: Convert to fraction form
    217,399.80/326,261.70 = 112,164.60/x
  3. Step 3: Cross multiply
    217,399.80x = 326,261.70 × 112,164.60
  4. Step 4: Simplify right side
    217,399.80x = 36,595,013,075.82
  5. Step 5: Solve for x
    x = 36,595,013,075.82/217,399.80
  6. Step 6: Final answer
    x = 168,330.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.