Home / 258,246.32-387,486.36-131,821.32

Finding the Fourth Proportional to 258,246.32, 387,486.36 and 131,821.32

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Solution

The fourth proportional to 258,246.32, 387,486.36 and 131,821.32 is: 197,791.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,246.32 : 387,486.36 = 131,821.32 : x
  2. Step 2: Convert to fraction form
    258,246.32/387,486.36 = 131,821.32/x
  3. Step 3: Cross multiply
    258,246.32x = 387,486.36 × 131,821.32
  4. Step 4: Simplify right side
    258,246.32x = 51,078,963,457.20
  5. Step 5: Solve for x
    x = 51,078,963,457.20/258,246.32
  6. Step 6: Final answer
    x = 197,791.64

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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.