Home / 305,434.96-457,914.60-145,428.56

Finding the Fourth Proportional to 305,434.96, 457,914.60 and 145,428.56

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Solution

The fourth proportional to 305,434.96, 457,914.60 and 145,428.56 is: 218,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,434.96 : 457,914.60 = 145,428.56 : x
  2. Step 2: Convert to fraction form
    305,434.96/457,914.60 = 145,428.56/x
  3. Step 3: Cross multiply
    305,434.96x = 457,914.60 × 145,428.56
  4. Step 4: Simplify right side
    305,434.96x = 66,593,860,880.98
  5. Step 5: Solve for x
    x = 66,593,860,880.98/305,434.96
  6. Step 6: Final answer
    x = 218,029.60

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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.