Home / 211,152,002.20-316,728,003.30-207,750,779.80

Finding the Fourth Proportional to 211,152,002.20, 316,728,003.30 and 207,750,779.80

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Solution

The fourth proportional to 211,152,002.20, 316,728,003.30 and 207,750,779.80 is: 311,626,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,152,002.20 : 316,728,003.30 = 207,750,779.80 : x
  2. Step 2: Convert to fraction form
    211,152,002.20/316,728,003.30 = 207,750,779.80/x
  3. Step 3: Cross multiply
    211,152,002.20x = 316,728,003.30 × 207,750,779.80
  4. Step 4: Simplify right side
    211,152,002.20x = 65,800,489,670,071,976
  5. Step 5: Solve for x
    x = 65,800,489,670,071,976/211,152,002.20
  6. Step 6: Final answer
    x = 311,626,169.70

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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.