Home / 217,780.20-300,515.76-122,265

Finding the Fourth Proportional to 217,780.20, 300,515.76 and 122,265

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Solution

The fourth proportional to 217,780.20, 300,515.76 and 122,265 is: 168,713.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,780.20 : 300,515.76 = 122,265 : x
  2. Step 2: Convert to fraction form
    217,780.20/300,515.76 = 122,265/x
  3. Step 3: Cross multiply
    217,780.20x = 300,515.76 × 122,265
  4. Step 4: Simplify right side
    217,780.20x = 36,742,559,396.40
  5. Step 5: Solve for x
    x = 36,742,559,396.40/217,780.20
  6. Step 6: Final answer
    x = 168,713.96

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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.