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Finding the Fourth Proportional to 276,269.67, 381,225.42 and 155,452.77

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Solution

The fourth proportional to 276,269.67, 381,225.42 and 155,452.77 is: 214,509.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,269.67 : 381,225.42 = 155,452.77 : x
  2. Step 2: Convert to fraction form
    276,269.67/381,225.42 = 155,452.77/x
  3. Step 3: Cross multiply
    276,269.67x = 381,225.42 × 155,452.77
  4. Step 4: Simplify right side
    276,269.67x = 59,262,547,533.41
  5. Step 5: Solve for x
    x = 59,262,547,533.41/276,269.67
  6. Step 6: Final answer
    x = 214,509.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.