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Finding the Fourth Proportional to 272,036.75, 408,054.60 and 72,357.35

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Solution

The fourth proportional to 272,036.75, 408,054.60 and 72,357.35 is: 108,535.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,036.75 : 408,054.60 = 72,357.35 : x
  2. Step 2: Convert to fraction form
    272,036.75/408,054.60 = 72,357.35/x
  3. Step 3: Cross multiply
    272,036.75x = 408,054.60 × 72,357.35
  4. Step 4: Simplify right side
    272,036.75x = 29,525,749,511.31
  5. Step 5: Solve for x
    x = 29,525,749,511.31/272,036.75
  6. Step 6: Final answer
    x = 108,535.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.