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Finding the Fourth Proportional to 278,329.42, 417,436.71 and 136,028.62

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Solution

The fourth proportional to 278,329.42, 417,436.71 and 136,028.62 is: 204,014.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,329.42 : 417,436.71 = 136,028.62 : x
  2. Step 2: Convert to fraction form
    278,329.42/417,436.71 = 136,028.62/x
  3. Step 3: Cross multiply
    278,329.42x = 417,436.71 × 136,028.62
  4. Step 4: Simplify right side
    278,329.42x = 56,783,339,598.64
  5. Step 5: Solve for x
    x = 56,783,339,598.64/278,329.42
  6. Step 6: Final answer
    x = 204,014.87

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1.5x scale

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.