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Finding the Fourth Proportional to 298,390.41, 447,656.67 and 88,028.55

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Solution

The fourth proportional to 298,390.41, 447,656.67 and 88,028.55 is: 132,063.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,390.41 : 447,656.67 = 88,028.55 : x
  2. Step 2: Convert to fraction form
    298,390.41/447,656.67 = 88,028.55/x
  3. Step 3: Cross multiply
    298,390.41x = 447,656.67 × 88,028.55
  4. Step 4: Simplify right side
    298,390.41x = 39,406,567,557.93
  5. Step 5: Solve for x
    x = 39,406,567,557.93/298,390.41
  6. Step 6: Final answer
    x = 132,063.79

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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.