Home / 681,505.80-1,022,307.30-208,190.40

Finding the Fourth Proportional to 681,505.80, 1,022,307.30 and 208,190.40

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Solution

The fourth proportional to 681,505.80, 1,022,307.30 and 208,190.40 is: 312,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,505.80 : 1,022,307.30 = 208,190.40 : x
  2. Step 2: Convert to fraction form
    681,505.80/1,022,307.30 = 208,190.40/x
  3. Step 3: Cross multiply
    681,505.80x = 1,022,307.30 × 208,190.40
  4. Step 4: Simplify right side
    681,505.80x = 212,834,565,709.92
  5. Step 5: Solve for x
    x = 212,834,565,709.92/681,505.80
  6. Step 6: Final answer
    x = 312,300.45

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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.