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Finding the Fourth Proportional to 225,401.37, 311,040.08 and 123,428.04

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Solution

The fourth proportional to 225,401.37, 311,040.08 and 123,428.04 is: 170,323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,401.37 : 311,040.08 = 123,428.04 : x
  2. Step 2: Convert to fraction form
    225,401.37/311,040.08 = 123,428.04/x
  3. Step 3: Cross multiply
    225,401.37x = 311,040.08 × 123,428.04
  4. Step 4: Simplify right side
    225,401.37x = 38,391,065,263.50
  5. Step 5: Solve for x
    x = 38,391,065,263.50/225,401.37
  6. Step 6: Final answer
    x = 170,323.13

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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.