Home / 288,418.19-398,014.75-159,356.25

Finding the Fourth Proportional to 288,418.19, 398,014.75 and 159,356.25

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Solution

The fourth proportional to 288,418.19, 398,014.75 and 159,356.25 is: 219,910.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,418.19 : 398,014.75 = 159,356.25 : x
  2. Step 2: Convert to fraction form
    288,418.19/398,014.75 = 159,356.25/x
  3. Step 3: Cross multiply
    288,418.19x = 398,014.75 × 159,356.25
  4. Step 4: Simplify right side
    288,418.19x = 63,426,138,004.69
  5. Step 5: Solve for x
    x = 63,426,138,004.69/288,418.19
  6. Step 6: Final answer
    x = 219,910.33

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1.5x scale

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.