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Finding the Fourth Proportional to 381,191.13, 526,106.75 and 211,479.93

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Solution

The fourth proportional to 381,191.13, 526,106.75 and 211,479.93 is: 291,877.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,191.13 : 526,106.75 = 211,479.93 : x
  2. Step 2: Convert to fraction form
    381,191.13/526,106.75 = 211,479.93/x
  3. Step 3: Cross multiply
    381,191.13x = 526,106.75 × 211,479.93
  4. Step 4: Simplify right side
    381,191.13x = 111,261,017,605.13
  5. Step 5: Solve for x
    x = 111,261,017,605.13/381,191.13
  6. Step 6: Final answer
    x = 291,877.25

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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.