Home / 211,995,885.36-317,993,938.80-66,440,783.04

Finding the Fourth Proportional to 211,995,885.36, 317,993,938.80 and 66,440,783.04

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Solution

The fourth proportional to 211,995,885.36, 317,993,938.80 and 66,440,783.04 is: 99,661,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,995,885.36 : 317,993,938.80 = 66,440,783.04 : x
  2. Step 2: Convert to fraction form
    211,995,885.36/317,993,938.80 = 66,440,783.04/x
  3. Step 3: Cross multiply
    211,995,885.36x = 317,993,938.80 × 66,440,783.04
  4. Step 4: Simplify right side
    211,995,885.36x = 21,127,766,295,845,840
  5. Step 5: Solve for x
    x = 21,127,766,295,845,840/211,995,885.36
  6. Step 6: Final answer
    x = 99,661,209.27

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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.