Home / 211,889,998.20-317,834,997.30-199,985,719.80

Finding the Fourth Proportional to 211,889,998.20, 317,834,997.30 and 199,985,719.80

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Solution

The fourth proportional to 211,889,998.20, 317,834,997.30 and 199,985,719.80 is: 299,978,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,889,998.20 : 317,834,997.30 = 199,985,719.80 : x
  2. Step 2: Convert to fraction form
    211,889,998.20/317,834,997.30 = 199,985,719.80/x
  3. Step 3: Cross multiply
    211,889,998.20x = 317,834,997.30 × 199,985,719.80
  4. Step 4: Simplify right side
    211,889,998.20x = 63,562,460,712,671,560
  5. Step 5: Solve for x
    x = 63,562,460,712,671,560/211,889,998.20
  6. Step 6: Final answer
    x = 299,978,579.70

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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.