Home / 211,412,812.80-317,024,740.80-81,977,404.80

Finding the Fourth Proportional to 211,412,812.80, 317,024,740.80 and 81,977,404.80

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Solution

The fourth proportional to 211,412,812.80, 317,024,740.80 and 81,977,404.80 is: 122,929,472.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,412,812.80 : 317,024,740.80 = 81,977,404.80 : x
  2. Step 2: Convert to fraction form
    211,412,812.80/317,024,740.80 = 81,977,404.80/x
  3. Step 3: Cross multiply
    211,412,812.80x = 317,024,740.80 × 81,977,404.80
  4. Step 4: Simplify right side
    211,412,812.80x = 25,988,865,508,176,676
  5. Step 5: Solve for x
    x = 25,988,865,508,176,676/211,412,812.80
  6. Step 6: Final answer
    x = 122,929,472.27

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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.