Home / 288,639.48-398,305.32-159,570.22

Finding the Fourth Proportional to 288,639.48, 398,305.32 and 159,570.22

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Solution

The fourth proportional to 288,639.48, 398,305.32 and 159,570.22 is: 220,197.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,639.48 : 398,305.32 = 159,570.22 : x
  2. Step 2: Convert to fraction form
    288,639.48/398,305.32 = 159,570.22/x
  3. Step 3: Cross multiply
    288,639.48x = 398,305.32 × 159,570.22
  4. Step 4: Simplify right side
    288,639.48x = 63,557,666,797.59
  5. Step 5: Solve for x
    x = 63,557,666,797.59/288,639.48
  6. Step 6: Final answer
    x = 220,197.42

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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.