Home / 280,728,000.20-421,092,000.30-236,386,137.80

Finding the Fourth Proportional to 280,728,000.20, 421,092,000.30 and 236,386,137.80

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Solution

The fourth proportional to 280,728,000.20, 421,092,000.30 and 236,386,137.80 is: 354,579,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,728,000.20 : 421,092,000.30 = 236,386,137.80 : x
  2. Step 2: Convert to fraction form
    280,728,000.20/421,092,000.30 = 236,386,137.80/x
  3. Step 3: Cross multiply
    280,728,000.20x = 421,092,000.30 × 236,386,137.80
  4. Step 4: Simplify right side
    280,728,000.20x = 99,540,311,609,393,456
  5. Step 5: Solve for x
    x = 99,540,311,609,393,456/280,728,000.20
  6. Step 6: Final answer
    x = 354,579,206.70

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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.