Home / 276,688.16-381,825.60-155,829.68

Finding the Fourth Proportional to 276,688.16, 381,825.60 and 155,829.68

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Solution

The fourth proportional to 276,688.16, 381,825.60 and 155,829.68 is: 215,042.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,688.16 : 381,825.60 = 155,829.68 : x
  2. Step 2: Convert to fraction form
    276,688.16/381,825.60 = 155,829.68/x
  3. Step 3: Cross multiply
    276,688.16x = 381,825.60 × 155,829.68
  4. Step 4: Simplify right side
    276,688.16x = 59,499,761,063.81
  5. Step 5: Solve for x
    x = 59,499,761,063.81/276,688.16
  6. Step 6: Final answer
    x = 215,042.67

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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.