Home / 382,719.47-528,084.78-221,566.73

Finding the Fourth Proportional to 382,719.47, 528,084.78 and 221,566.73

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Solution

The fourth proportional to 382,719.47, 528,084.78 and 221,566.73 is: 305,722.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,719.47 : 528,084.78 = 221,566.73 : x
  2. Step 2: Convert to fraction form
    382,719.47/528,084.78 = 221,566.73/x
  3. Step 3: Cross multiply
    382,719.47x = 528,084.78 × 221,566.73
  4. Step 4: Simplify right side
    382,719.47x = 117,006,017,867.37
  5. Step 5: Solve for x
    x = 117,006,017,867.37/382,719.47
  6. Step 6: Final answer
    x = 305,722.67

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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.