Home / 209,990,761.08-315,001,276.92-80,598,371.40

Finding the Fourth Proportional to 209,990,761.08, 315,001,276.92 and 80,598,371.40

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Solution

The fourth proportional to 209,990,761.08, 315,001,276.92 and 80,598,371.40 is: 120,903,366.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,990,761.08 : 315,001,276.92 = 80,598,371.40 : x
  2. Step 2: Convert to fraction form
    209,990,761.08/315,001,276.92 = 80,598,371.40/x
  3. Step 3: Cross multiply
    209,990,761.08x = 315,001,276.92 × 80,598,371.40
  4. Step 4: Simplify right side
    209,990,761.08x = 25,388,589,908,672,412
  5. Step 5: Solve for x
    x = 25,388,589,908,672,412/209,990,761.08
  6. Step 6: Final answer
    x = 120,903,366.31

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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.