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Finding the Fourth Proportional to 288,859.37, 398,609.64 and 159,790.32

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Solution

The fourth proportional to 288,859.37, 398,609.64 and 159,790.32 is: 220,501.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,859.37 : 398,609.64 = 159,790.32 : x
  2. Step 2: Convert to fraction form
    288,859.37/398,609.64 = 159,790.32/x
  3. Step 3: Cross multiply
    288,859.37x = 398,609.64 × 159,790.32
  4. Step 4: Simplify right side
    288,859.37x = 63,693,961,930.68
  5. Step 5: Solve for x
    x = 63,693,961,930.68/288,859.37
  6. Step 6: Final answer
    x = 220,501.63

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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.