Home / 305,255.36-457,875.89-80,631.47

Finding the Fourth Proportional to 305,255.36, 457,875.89 and 80,631.47

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Solution

The fourth proportional to 305,255.36, 457,875.89 and 80,631.47 is: 120,945.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,255.36 : 457,875.89 = 80,631.47 : x
  2. Step 2: Convert to fraction form
    305,255.36/457,875.89 = 80,631.47/x
  3. Step 3: Cross multiply
    305,255.36x = 457,875.89 × 80,631.47
  4. Step 4: Simplify right side
    305,255.36x = 36,919,203,395.72
  5. Step 5: Solve for x
    x = 36,919,203,395.72/305,255.36
  6. Step 6: Final answer
    x = 120,945.31

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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.