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Finding the Fourth Proportional to 225,503.07, 311,190.30 and 123,530.55

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Solution

The fourth proportional to 225,503.07, 311,190.30 and 123,530.55 is: 170,470.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,503.07 : 311,190.30 = 123,530.55 : x
  2. Step 2: Convert to fraction form
    225,503.07/311,190.30 = 123,530.55/x
  3. Step 3: Cross multiply
    225,503.07x = 311,190.30 × 123,530.55
  4. Step 4: Simplify right side
    225,503.07x = 38,441,508,913.67
  5. Step 5: Solve for x
    x = 38,441,508,913.67/225,503.07
  6. Step 6: Final answer
    x = 170,470.00

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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.