Home / 211,995,857.30-317,993,896.86-66,440,755.07

Finding the Fourth Proportional to 211,995,857.30, 317,993,896.86 and 66,440,755.07

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Solution

The fourth proportional to 211,995,857.30, 317,993,896.86 and 66,440,755.07 is: 99,661,167.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,995,857.30 : 317,993,896.86 = 66,440,755.07 : x
  2. Step 2: Convert to fraction form
    211,995,857.30/317,993,896.86 = 66,440,755.07/x
  3. Step 3: Cross multiply
    211,995,857.30x = 317,993,896.86 × 66,440,755.07
  4. Step 4: Simplify right side
    211,995,857.30x = 21,127,754,615,030,104
  5. Step 5: Solve for x
    x = 21,127,754,615,030,104/211,995,857.30
  6. Step 6: Final answer
    x = 99,661,167.36

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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.