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Finding the Fourth Proportional to 225,412.25, 311,078.64 and 124,810.25

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Solution

The fourth proportional to 225,412.25, 311,078.64 and 124,810.25 is: 172,243.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,412.25 : 311,078.64 = 124,810.25 : x
  2. Step 2: Convert to fraction form
    225,412.25/311,078.64 = 124,810.25/x
  3. Step 3: Cross multiply
    225,412.25x = 311,078.64 × 124,810.25
  4. Step 4: Simplify right side
    225,412.25x = 38,825,802,828.06
  5. Step 5: Solve for x
    x = 38,825,802,828.06/225,412.25
  6. Step 6: Final answer
    x = 172,243.54

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1.5x scale

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.