Home / 288,986.06-398,782.40-158,137.17

Finding the Fourth Proportional to 288,986.06, 398,782.40 and 158,137.17

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Solution

The fourth proportional to 288,986.06, 398,782.40 and 158,137.17 is: 218,219.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,986.06 : 398,782.40 = 158,137.17 : x
  2. Step 2: Convert to fraction form
    288,986.06/398,782.40 = 158,137.17/x
  3. Step 3: Cross multiply
    288,986.06x = 398,782.40 × 158,137.17
  4. Step 4: Simplify right side
    288,986.06x = 63,062,319,391.12
  5. Step 5: Solve for x
    x = 63,062,319,391.12/288,986.06
  6. Step 6: Final answer
    x = 218,219.25

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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.