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Finding the Fourth Proportional to 225,986.47, 311,860.45 and 124,013.63

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Solution

The fourth proportional to 225,986.47, 311,860.45 and 124,013.63 is: 171,138.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,986.47 : 311,860.45 = 124,013.63 : x
  2. Step 2: Convert to fraction form
    225,986.47/311,860.45 = 124,013.63/x
  3. Step 3: Cross multiply
    225,986.47x = 311,860.45 × 124,013.63
  4. Step 4: Simplify right side
    225,986.47x = 38,674,946,457.93
  5. Step 5: Solve for x
    x = 38,674,946,457.93/225,986.47
  6. Step 6: Final answer
    x = 171,138.33

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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.