Home / 485,315.91-727,975.71-148,355.28

Finding the Fourth Proportional to 485,315.91, 727,975.71 and 148,355.28

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Solution

The fourth proportional to 485,315.91, 727,975.71 and 148,355.28 is: 222,533.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,315.91 : 727,975.71 = 148,355.28 : x
  2. Step 2: Convert to fraction form
    485,315.91/727,975.71 = 148,355.28/x
  3. Step 3: Cross multiply
    485,315.91x = 727,975.71 × 148,355.28
  4. Step 4: Simplify right side
    485,315.91x = 107,999,040,290.25
  5. Step 5: Solve for x
    x = 107,999,040,290.25/485,315.91
  6. Step 6: Final answer
    x = 222,533.48

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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.