Home / 258,621.12-387,502.56-90,052.32

Finding the Fourth Proportional to 258,621.12, 387,502.56 and 90,052.32

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Solution

The fourth proportional to 258,621.12, 387,502.56 and 90,052.32 is: 134,929.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,621.12 : 387,502.56 = 90,052.32 : x
  2. Step 2: Convert to fraction form
    258,621.12/387,502.56 = 90,052.32/x
  3. Step 3: Cross multiply
    258,621.12x = 387,502.56 × 90,052.32
  4. Step 4: Simplify right side
    258,621.12x = 34,895,504,533.94
  5. Step 5: Solve for x
    x = 34,895,504,533.94/258,621.12
  6. Step 6: Final answer
    x = 134,929.06

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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.