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Finding the Fourth Proportional to 305,139.36, 457,738.56 and 94,720.80

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Solution

The fourth proportional to 305,139.36, 457,738.56 and 94,720.80 is: 142,090.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,139.36 : 457,738.56 = 94,720.80 : x
  2. Step 2: Convert to fraction form
    305,139.36/457,738.56 = 94,720.80/x
  3. Step 3: Cross multiply
    305,139.36x = 457,738.56 × 94,720.80
  4. Step 4: Simplify right side
    305,139.36x = 43,357,362,594.05
  5. Step 5: Solve for x
    x = 43,357,362,594.05/305,139.36
  6. Step 6: Final answer
    x = 142,090.36

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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.