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Finding the Fourth Proportional to 315,849.76, 435,133.74 and 220,185.52

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Solution

The fourth proportional to 315,849.76, 435,133.74 and 220,185.52 is: 303,340.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,849.76 : 435,133.74 = 220,185.52 : x
  2. Step 2: Convert to fraction form
    315,849.76/435,133.74 = 220,185.52/x
  3. Step 3: Cross multiply
    315,849.76x = 435,133.74 × 220,185.52
  4. Step 4: Simplify right side
    315,849.76x = 95,810,148,811.44
  5. Step 5: Solve for x
    x = 95,810,148,811.44/315,849.76
  6. Step 6: Final answer
    x = 303,340.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.