Home / 288,718.11-398,433.57-159,665.27

Finding the Fourth Proportional to 288,718.11, 398,433.57 and 159,665.27

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Solution

The fourth proportional to 288,718.11, 398,433.57 and 159,665.27 is: 220,339.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,718.11 : 398,433.57 = 159,665.27 : x
  2. Step 2: Convert to fraction form
    288,718.11/398,433.57 = 159,665.27/x
  3. Step 3: Cross multiply
    288,718.11x = 398,433.57 × 159,665.27
  4. Step 4: Simplify right side
    288,718.11x = 63,616,000,740.62
  5. Step 5: Solve for x
    x = 63,616,000,740.62/288,718.11
  6. Step 6: Final answer
    x = 220,339.49

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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.