Home / 280,852.20-421,278.30-258,982.20

Finding the Fourth Proportional to 280,852.20, 421,278.30 and 258,982.20

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Solution

The fourth proportional to 280,852.20, 421,278.30 and 258,982.20 is: 388,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,852.20 : 421,278.30 = 258,982.20 : x
  2. Step 2: Convert to fraction form
    280,852.20/421,278.30 = 258,982.20/x
  3. Step 3: Cross multiply
    280,852.20x = 421,278.30 × 258,982.20
  4. Step 4: Simplify right side
    280,852.20x = 109,103,580,946.26
  5. Step 5: Solve for x
    x = 109,103,580,946.26/280,852.20
  6. Step 6: Final answer
    x = 388,473.30

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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.