Home / 305,606.07-421,620.66-225,225.32

Finding the Fourth Proportional to 305,606.07, 421,620.66 and 225,225.32

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Solution

The fourth proportional to 305,606.07, 421,620.66 and 225,225.32 is: 310,725.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,606.07 : 421,620.66 = 225,225.32 : x
  2. Step 2: Convert to fraction form
    305,606.07/421,620.66 = 225,225.32/x
  3. Step 3: Cross multiply
    305,606.07x = 421,620.66 × 225,225.32
  4. Step 4: Simplify right side
    305,606.07x = 94,959,645,959.01
  5. Step 5: Solve for x
    x = 94,959,645,959.01/305,606.07
  6. Step 6: Final answer
    x = 310,725.65

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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.