Home / 280,934.40-421,811.20-218,675.20

Finding the Fourth Proportional to 280,934.40, 421,811.20 and 218,675.20

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Solution

The fourth proportional to 280,934.40, 421,811.20 and 218,675.20 is: 328,331.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,934.40 : 421,811.20 = 218,675.20 : x
  2. Step 2: Convert to fraction form
    280,934.40/421,811.20 = 218,675.20/x
  3. Step 3: Cross multiply
    280,934.40x = 421,811.20 × 218,675.20
  4. Step 4: Simplify right side
    280,934.40x = 92,239,648,522.24
  5. Step 5: Solve for x
    x = 92,239,648,522.24/280,934.40
  6. Step 6: Final answer
    x = 328,331.63

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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.