Home / 217,437.03-300,065.61-120,642.70

Finding the Fourth Proportional to 217,437.03, 300,065.61 and 120,642.70

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Solution

The fourth proportional to 217,437.03, 300,065.61 and 120,642.70 is: 166,488.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,437.03 : 300,065.61 = 120,642.70 : x
  2. Step 2: Convert to fraction form
    217,437.03/300,065.61 = 120,642.70/x
  3. Step 3: Cross multiply
    217,437.03x = 300,065.61 × 120,642.70
  4. Step 4: Simplify right side
    217,437.03x = 36,200,725,367.55
  5. Step 5: Solve for x
    x = 36,200,725,367.55/217,437.03
  6. Step 6: Final answer
    x = 166,488.32

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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.