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Finding the Fourth Proportional to 276,338.88, 381,339.36 and 155,486.88

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Solution

The fourth proportional to 276,338.88, 381,339.36 and 155,486.88 is: 214,567.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,338.88 : 381,339.36 = 155,486.88 : x
  2. Step 2: Convert to fraction form
    276,338.88/381,339.36 = 155,486.88/x
  3. Step 3: Cross multiply
    276,338.88x = 381,339.36 × 155,486.88
  4. Step 4: Simplify right side
    276,338.88x = 59,293,267,307.60
  5. Step 5: Solve for x
    x = 59,293,267,307.60/276,338.88
  6. Step 6: Final answer
    x = 214,567.23

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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.