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Finding the Fourth Proportional to 389,046.87, 536,888.78 and 219,281.00

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Solution

The fourth proportional to 389,046.87, 536,888.78 and 219,281.00 is: 302,610.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,046.87 : 536,888.78 = 219,281.00 : x
  2. Step 2: Convert to fraction form
    389,046.87/536,888.78 = 219,281.00/x
  3. Step 3: Cross multiply
    389,046.87x = 536,888.78 × 219,281.00
  4. Step 4: Simplify right side
    389,046.87x = 117,729,505,882.74
  5. Step 5: Solve for x
    x = 117,729,505,882.74/389,046.87
  6. Step 6: Final answer
    x = 302,610.08

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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.