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Finding the Fourth Proportional to 381,580, 526,554.04 and 211,800.76

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Solution

The fourth proportional to 381,580, 526,554.04 and 211,800.76 is: 292,270.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,580 : 526,554.04 = 211,800.76 : x
  2. Step 2: Convert to fraction form
    381,580/526,554.04 = 211,800.76/x
  3. Step 3: Cross multiply
    381,580x = 526,554.04 × 211,800.76
  4. Step 4: Simplify right side
    381,580x = 111,524,545,853.07
  5. Step 5: Solve for x
    x = 111,524,545,853.07/381,580
  6. Step 6: Final answer
    x = 292,270.42

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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.