Home / 640,110.12-959,954.07-213,528.39

Finding the Fourth Proportional to 640,110.12, 959,954.07 and 213,528.39

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Solution

The fourth proportional to 640,110.12, 959,954.07 and 213,528.39 is: 320,222.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,110.12 : 959,954.07 = 213,528.39 : x
  2. Step 2: Convert to fraction form
    640,110.12/959,954.07 = 213,528.39/x
  3. Step 3: Cross multiply
    640,110.12x = 959,954.07 × 213,528.39
  4. Step 4: Simplify right side
    640,110.12x = 204,977,447,041.05
  5. Step 5: Solve for x
    x = 204,977,447,041.05/640,110.12
  6. Step 6: Final answer
    x = 320,222.16

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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.