Home / 305,129.63-421,093.28-190,476.16

Finding the Fourth Proportional to 305,129.63, 421,093.28 and 190,476.16

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Solution

The fourth proportional to 305,129.63, 421,093.28 and 190,476.16 is: 262,866.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,129.63 : 421,093.28 = 190,476.16 : x
  2. Step 2: Convert to fraction form
    305,129.63/421,093.28 = 190,476.16/x
  3. Step 3: Cross multiply
    305,129.63x = 421,093.28 × 190,476.16
  4. Step 4: Simplify right side
    305,129.63x = 80,208,230,399.66
  5. Step 5: Solve for x
    x = 80,208,230,399.66/305,129.63
  6. Step 6: Final answer
    x = 262,866.08

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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.