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Finding the Fourth Proportional to 288,772.29, 398,345.77 and 167,900.21

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Solution

The fourth proportional to 288,772.29, 398,345.77 and 167,900.21 is: 231,609.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,772.29 : 398,345.77 = 167,900.21 : x
  2. Step 2: Convert to fraction form
    288,772.29/398,345.77 = 167,900.21/x
  3. Step 3: Cross multiply
    288,772.29x = 398,345.77 × 167,900.21
  4. Step 4: Simplify right side
    288,772.29x = 66,882,340,388.25
  5. Step 5: Solve for x
    x = 66,882,340,388.25/288,772.29
  6. Step 6: Final answer
    x = 231,609.27

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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.