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Finding the Fourth Proportional to 276,671.70, 415,007.55 and 192,690.90

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Solution

The fourth proportional to 276,671.70, 415,007.55 and 192,690.90 is: 289,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,671.70 : 415,007.55 = 192,690.90 : x
  2. Step 2: Convert to fraction form
    276,671.70/415,007.55 = 192,690.90/x
  3. Step 3: Cross multiply
    276,671.70x = 415,007.55 × 192,690.90
  4. Step 4: Simplify right side
    276,671.70x = 79,968,178,316.30
  5. Step 5: Solve for x
    x = 79,968,178,316.30/276,671.70
  6. Step 6: Final answer
    x = 289,036.35

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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.