Home / 276,130.07-381,061.76-155,270.30

Finding the Fourth Proportional to 276,130.07, 381,061.76 and 155,270.30

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Solution

The fourth proportional to 276,130.07, 381,061.76 and 155,270.30 is: 214,274.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,130.07 : 381,061.76 = 155,270.30 : x
  2. Step 2: Convert to fraction form
    276,130.07/381,061.76 = 155,270.30/x
  3. Step 3: Cross multiply
    276,130.07x = 381,061.76 × 155,270.30
  4. Step 4: Simplify right side
    276,130.07x = 59,167,571,112.07
  5. Step 5: Solve for x
    x = 59,167,571,112.07/276,130.07
  6. Step 6: Final answer
    x = 214,274.28

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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.