Home / 217,828.40-326,742.60-143,178.80

Finding the Fourth Proportional to 217,828.40, 326,742.60 and 143,178.80

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Solution

The fourth proportional to 217,828.40, 326,742.60 and 143,178.80 is: 214,768.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,828.40 : 326,742.60 = 143,178.80 : x
  2. Step 2: Convert to fraction form
    217,828.40/326,742.60 = 143,178.80/x
  3. Step 3: Cross multiply
    217,828.40x = 326,742.60 × 143,178.80
  4. Step 4: Simplify right side
    217,828.40x = 46,782,613,376.88
  5. Step 5: Solve for x
    x = 46,782,613,376.88/217,828.40
  6. Step 6: Final answer
    x = 214,768.20

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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.