Home / 857,800.40-1,286,692.60-218,105.52

Finding the Fourth Proportional to 857,800.40, 1,286,692.60 and 218,105.52

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Solution

The fourth proportional to 857,800.40, 1,286,692.60 and 218,105.52 is: 327,156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,800.40 : 1,286,692.60 = 218,105.52 : x
  2. Step 2: Convert to fraction form
    857,800.40/1,286,692.60 = 218,105.52/x
  3. Step 3: Cross multiply
    857,800.40x = 1,286,692.60 × 218,105.52
  4. Step 4: Simplify right side
    857,800.40x = 280,634,758,603.15
  5. Step 5: Solve for x
    x = 280,634,758,603.15/857,800.40
  6. Step 6: Final answer
    x = 327,156.25

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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.