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Finding the Fourth Proportional to 223,697.19, 308,707.40 and 126,907.58

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Solution

The fourth proportional to 223,697.19, 308,707.40 and 126,907.58 is: 175,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,697.19 : 308,707.40 = 126,907.58 : x
  2. Step 2: Convert to fraction form
    223,697.19/308,707.40 = 126,907.58/x
  3. Step 3: Cross multiply
    223,697.19x = 308,707.40 × 126,907.58
  4. Step 4: Simplify right side
    223,697.19x = 39,177,308,414.65
  5. Step 5: Solve for x
    x = 39,177,308,414.65/223,697.19
  6. Step 6: Final answer
    x = 175,135.45

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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.