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Finding the Fourth Proportional to 278,428.58, 417,707.67 and 120,672.98

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Solution

The fourth proportional to 278,428.58, 417,707.67 and 120,672.98 is: 181,037.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,428.58 : 417,707.67 = 120,672.98 : x
  2. Step 2: Convert to fraction form
    278,428.58/417,707.67 = 120,672.98/x
  3. Step 3: Cross multiply
    278,428.58x = 417,707.67 × 120,672.98
  4. Step 4: Simplify right side
    278,428.58x = 50,406,029,307.76
  5. Step 5: Solve for x
    x = 50,406,029,307.76/278,428.58
  6. Step 6: Final answer
    x = 181,037.55

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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.