Home / 321,119.16-481,828.20-143,746.20

Finding the Fourth Proportional to 321,119.16, 481,828.20 and 143,746.20

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Solution

The fourth proportional to 321,119.16, 481,828.20 and 143,746.20 is: 215,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,119.16 : 481,828.20 = 143,746.20 : x
  2. Step 2: Convert to fraction form
    321,119.16/481,828.20 = 143,746.20/x
  3. Step 3: Cross multiply
    321,119.16x = 481,828.20 × 143,746.20
  4. Step 4: Simplify right side
    321,119.16x = 69,260,972,802.84
  5. Step 5: Solve for x
    x = 69,260,972,802.84/321,119.16
  6. Step 6: Final answer
    x = 215,686.20

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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.