Home / 305,220.08-457,820.40-80,573.60

Finding the Fourth Proportional to 305,220.08, 457,820.40 and 80,573.60

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Solution

The fourth proportional to 305,220.08, 457,820.40 and 80,573.60 is: 120,857.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,220.08 : 457,820.40 = 80,573.60 : x
  2. Step 2: Convert to fraction form
    305,220.08/457,820.40 = 80,573.60/x
  3. Step 3: Cross multiply
    305,220.08x = 457,820.40 × 80,573.60
  4. Step 4: Simplify right side
    305,220.08x = 36,888,237,781.44
  5. Step 5: Solve for x
    x = 36,888,237,781.44/305,220.08
  6. Step 6: Final answer
    x = 120,857.83

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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.