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Finding the Fourth Proportional to 217,085.80, 325,628.70 and 154,100.20

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Solution

The fourth proportional to 217,085.80, 325,628.70 and 154,100.20 is: 231,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,085.80 : 325,628.70 = 154,100.20 : x
  2. Step 2: Convert to fraction form
    217,085.80/325,628.70 = 154,100.20/x
  3. Step 3: Cross multiply
    217,085.80x = 325,628.70 × 154,100.20
  4. Step 4: Simplify right side
    217,085.80x = 50,179,447,795.74
  5. Step 5: Solve for x
    x = 50,179,447,795.74/217,085.80
  6. Step 6: Final answer
    x = 231,150.30

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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.