Home / 219,000.44-302,163.38-128,307.71

Finding the Fourth Proportional to 219,000.44, 302,163.38 and 128,307.71

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Solution

The fourth proportional to 219,000.44, 302,163.38 and 128,307.71 is: 177,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,000.44 : 302,163.38 = 128,307.71 : x
  2. Step 2: Convert to fraction form
    219,000.44/302,163.38 = 128,307.71/x
  3. Step 3: Cross multiply
    219,000.44x = 302,163.38 × 128,307.71
  4. Step 4: Simplify right side
    219,000.44x = 38,769,891,928.68
  5. Step 5: Solve for x
    x = 38,769,891,928.68/219,000.44
  6. Step 6: Final answer
    x = 177,031.11

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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.