Home / 280,771.20-421,178.88-93,783.36

Finding the Fourth Proportional to 280,771.20, 421,178.88 and 93,783.36

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Solution

The fourth proportional to 280,771.20, 421,178.88 and 93,783.36 is: 140,682.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,771.20 : 421,178.88 = 93,783.36 : x
  2. Step 2: Convert to fraction form
    280,771.20/421,178.88 = 93,783.36/x
  3. Step 3: Cross multiply
    280,771.20x = 421,178.88 × 93,783.36
  4. Step 4: Simplify right side
    280,771.20x = 39,499,570,527.44
  5. Step 5: Solve for x
    x = 39,499,570,527.44/280,771.20
  6. Step 6: Final answer
    x = 140,682.42

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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.