Home / 305,405.10-458,286.30-127,897.20

Finding the Fourth Proportional to 305,405.10, 458,286.30 and 127,897.20

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Solution

The fourth proportional to 305,405.10, 458,286.30 and 127,897.20 is: 191,920.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,405.10 : 458,286.30 = 127,897.20 : x
  2. Step 2: Convert to fraction form
    305,405.10/458,286.30 = 127,897.20/x
  3. Step 3: Cross multiply
    305,405.10x = 458,286.30 × 127,897.20
  4. Step 4: Simplify right side
    305,405.10x = 58,613,534,568.36
  5. Step 5: Solve for x
    x = 58,613,534,568.36/305,405.10
  6. Step 6: Final answer
    x = 191,920.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.