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Finding the Fourth Proportional to 225,400.03, 311,055.87 and 123,423.87

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Solution

The fourth proportional to 225,400.03, 311,055.87 and 123,423.87 is: 170,327.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,400.03 : 311,055.87 = 123,423.87 : x
  2. Step 2: Convert to fraction form
    225,400.03/311,055.87 = 123,423.87/x
  3. Step 3: Cross multiply
    225,400.03x = 311,055.87 × 123,423.87
  4. Step 4: Simplify right side
    225,400.03x = 38,391,718,794.10
  5. Step 5: Solve for x
    x = 38,391,718,794.10/225,400.03
  6. Step 6: Final answer
    x = 170,327.03

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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.