Home / 217,475.73-300,247.70-142,155.45

Finding the Fourth Proportional to 217,475.73, 300,247.70 and 142,155.45

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Solution

The fourth proportional to 217,475.73, 300,247.70 and 142,155.45 is: 196,260.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,475.73 : 300,247.70 = 142,155.45 : x
  2. Step 2: Convert to fraction form
    217,475.73/300,247.70 = 142,155.45/x
  3. Step 3: Cross multiply
    217,475.73x = 300,247.70 × 142,155.45
  4. Step 4: Simplify right side
    217,475.73x = 42,681,846,194.19
  5. Step 5: Solve for x
    x = 42,681,846,194.19/217,475.73
  6. Step 6: Final answer
    x = 196,260.27

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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.