Home / 221,320.16-305,445.47-135,329.54

Finding the Fourth Proportional to 221,320.16, 305,445.47 and 135,329.54

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Solution

The fourth proportional to 221,320.16, 305,445.47 and 135,329.54 is: 186,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,320.16 : 305,445.47 = 135,329.54 : x
  2. Step 2: Convert to fraction form
    221,320.16/305,445.47 = 135,329.54/x
  3. Step 3: Cross multiply
    221,320.16x = 305,445.47 × 135,329.54
  4. Step 4: Simplify right side
    221,320.16x = 41,335,794,950.18
  5. Step 5: Solve for x
    x = 41,335,794,950.18/221,320.16
  6. Step 6: Final answer
    x = 186,769.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.