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Finding the Fourth Proportional to 381,774.55, 526,859.93 and 218,457.61

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Solution

The fourth proportional to 381,774.55, 526,859.93 and 218,457.61 is: 301,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,774.55 : 526,859.93 = 218,457.61 : x
  2. Step 2: Convert to fraction form
    381,774.55/526,859.93 = 218,457.61/x
  3. Step 3: Cross multiply
    381,774.55x = 526,859.93 × 218,457.61
  4. Step 4: Simplify right side
    381,774.55x = 115,096,561,112.57
  5. Step 5: Solve for x
    x = 115,096,561,112.57/381,774.55
  6. Step 6: Final answer
    x = 301,477.83

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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.