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Finding the Fourth Proportional to 389,055.54, 536,900.74 and 219,289.66

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Solution

The fourth proportional to 389,055.54, 536,900.74 and 219,289.66 is: 302,622.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,055.54 : 536,900.74 = 219,289.66 : x
  2. Step 2: Convert to fraction form
    389,055.54/536,900.74 = 219,289.66/x
  3. Step 3: Cross multiply
    389,055.54x = 536,900.74 × 219,289.66
  4. Step 4: Simplify right side
    389,055.54x = 117,736,780,728.35
  5. Step 5: Solve for x
    x = 117,736,780,728.35/389,055.54
  6. Step 6: Final answer
    x = 302,622.04

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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.