Home / 276,128.70-381,050.04-155,266.89

Finding the Fourth Proportional to 276,128.70, 381,050.04 and 155,266.89

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Solution

The fourth proportional to 276,128.70, 381,050.04 and 155,266.89 is: 214,264.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,128.70 : 381,050.04 = 155,266.89 : x
  2. Step 2: Convert to fraction form
    276,128.70/381,050.04 = 155,266.89/x
  3. Step 3: Cross multiply
    276,128.70x = 381,050.04 × 155,266.89
  4. Step 4: Simplify right side
    276,128.70x = 59,164,454,645.18
  5. Step 5: Solve for x
    x = 59,164,454,645.18/276,128.70
  6. Step 6: Final answer
    x = 214,264.05

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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.