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Finding the Fourth Proportional to 305,896.53, 458,910.39 and 128,301.18

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Solution

The fourth proportional to 305,896.53, 458,910.39 and 128,301.18 is: 192,479.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,896.53 : 458,910.39 = 128,301.18 : x
  2. Step 2: Convert to fraction form
    305,896.53/458,910.39 = 128,301.18/x
  3. Step 3: Cross multiply
    305,896.53x = 458,910.39 × 128,301.18
  4. Step 4: Simplify right side
    305,896.53x = 58,878,744,551.26
  5. Step 5: Solve for x
    x = 58,878,744,551.26/305,896.53
  6. Step 6: Final answer
    x = 192,479.28

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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.