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Finding the Fourth Proportional to 381,350.21, 526,261.61 and 211,583.93

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Solution

The fourth proportional to 381,350.21, 526,261.61 and 211,583.93 is: 291,984.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,350.21 : 526,261.61 = 211,583.93 : x
  2. Step 2: Convert to fraction form
    381,350.21/526,261.61 = 211,583.93/x
  3. Step 3: Cross multiply
    381,350.21x = 526,261.61 × 211,583.93
  4. Step 4: Simplify right side
    381,350.21x = 111,348,498,594.01
  5. Step 5: Solve for x
    x = 111,348,498,594.01/381,350.21
  6. Step 6: Final answer
    x = 291,984.89

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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.