Home / 305,127.24-457,721.62-80,503.20

Finding the Fourth Proportional to 305,127.24, 457,721.62 and 80,503.20

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Solution

The fourth proportional to 305,127.24, 457,721.62 and 80,503.20 is: 120,762.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,127.24 : 457,721.62 = 80,503.20 : x
  2. Step 2: Convert to fraction form
    305,127.24/457,721.62 = 80,503.20/x
  3. Step 3: Cross multiply
    305,127.24x = 457,721.62 × 80,503.20
  4. Step 4: Simplify right side
    305,127.24x = 36,848,055,119.18
  5. Step 5: Solve for x
    x = 36,848,055,119.18/305,127.24
  6. Step 6: Final answer
    x = 120,762.92

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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.