Home / 280,964.80-421,447.20-186,486.40

Finding the Fourth Proportional to 280,964.80, 421,447.20 and 186,486.40

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Solution

The fourth proportional to 280,964.80, 421,447.20 and 186,486.40 is: 279,729.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,964.80 : 421,447.20 = 186,486.40 : x
  2. Step 2: Convert to fraction form
    280,964.80/421,447.20 = 186,486.40/x
  3. Step 3: Cross multiply
    280,964.80x = 421,447.20 × 186,486.40
  4. Step 4: Simplify right side
    280,964.80x = 78,594,171,118.08
  5. Step 5: Solve for x
    x = 78,594,171,118.08/280,964.80
  6. Step 6: Final answer
    x = 279,729.60

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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.