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Finding the Fourth Proportional to 276,040.58, 380,925.86 and 155,193.03

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Solution

The fourth proportional to 276,040.58, 380,925.86 and 155,193.03 is: 214,160.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,040.58 : 380,925.86 = 155,193.03 : x
  2. Step 2: Convert to fraction form
    276,040.58/380,925.86 = 155,193.03/x
  3. Step 3: Cross multiply
    276,040.58x = 380,925.86 × 155,193.03
  4. Step 4: Simplify right side
    276,040.58x = 59,117,037,642.79
  5. Step 5: Solve for x
    x = 59,117,037,642.79/276,040.58
  6. Step 6: Final answer
    x = 214,160.68

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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.