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Finding the Fourth Proportional to 397,327.75, 548,312.30 and 218,479.75

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Solution

The fourth proportional to 397,327.75, 548,312.30 and 218,479.75 is: 301,502.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,327.75 : 548,312.30 = 218,479.75 : x
  2. Step 2: Convert to fraction form
    397,327.75/548,312.30 = 218,479.75/x
  3. Step 3: Cross multiply
    397,327.75x = 548,312.30 × 218,479.75
  4. Step 4: Simplify right side
    397,327.75x = 119,795,134,225.93
  5. Step 5: Solve for x
    x = 119,795,134,225.93/397,327.75
  6. Step 6: Final answer
    x = 301,502.06

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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.