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Finding the Fourth Proportional to 298,780.40, 448,343.40 and 111,810.80

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Solution

The fourth proportional to 298,780.40, 448,343.40 and 111,810.80 is: 167,780.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,780.40 : 448,343.40 = 111,810.80 : x
  2. Step 2: Convert to fraction form
    298,780.40/448,343.40 = 111,810.80/x
  3. Step 3: Cross multiply
    298,780.40x = 448,343.40 × 111,810.80
  4. Step 4: Simplify right side
    298,780.40x = 50,129,634,228.72
  5. Step 5: Solve for x
    x = 50,129,634,228.72/298,780.40
  6. Step 6: Final answer
    x = 167,780.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.