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Finding the Fourth Proportional to 276,624.73, 381,762.54 and 155,779.21

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Solution

The fourth proportional to 276,624.73, 381,762.54 and 155,779.21 is: 214,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,624.73 : 381,762.54 = 155,779.21 : x
  2. Step 2: Convert to fraction form
    276,624.73/381,762.54 = 155,779.21/x
  3. Step 3: Cross multiply
    276,624.73x = 381,762.54 × 155,779.21
  4. Step 4: Simplify right side
    276,624.73x = 59,470,664,201.08
  5. Step 5: Solve for x
    x = 59,470,664,201.08/276,624.73
  6. Step 6: Final answer
    x = 214,986.80

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1.5x scale

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.