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Finding the Fourth Proportional to 281,065.30, 421,452.15 and 103,480.90

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Solution

The fourth proportional to 281,065.30, 421,452.15 and 103,480.90 is: 155,167.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,065.30 : 421,452.15 = 103,480.90 : x
  2. Step 2: Convert to fraction form
    281,065.30/421,452.15 = 103,480.90/x
  3. Step 3: Cross multiply
    281,065.30x = 421,452.15 × 103,480.90
  4. Step 4: Simplify right side
    281,065.30x = 43,612,247,788.94
  5. Step 5: Solve for x
    x = 43,612,247,788.94/281,065.30
  6. Step 6: Final answer
    x = 155,167.67

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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.