Home / 276,032.21-380,876.99-155,156.72

Finding the Fourth Proportional to 276,032.21, 380,876.99 and 155,156.72

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Solution

The fourth proportional to 276,032.21, 380,876.99 and 155,156.72 is: 214,089.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,032.21 : 380,876.99 = 155,156.72 : x
  2. Step 2: Convert to fraction form
    276,032.21/380,876.99 = 155,156.72/x
  3. Step 3: Cross multiply
    276,032.21x = 380,876.99 × 155,156.72
  4. Step 4: Simplify right side
    276,032.21x = 59,095,621,811.70
  5. Step 5: Solve for x
    x = 59,095,621,811.70/276,032.21
  6. Step 6: Final answer
    x = 214,089.59

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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.