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Finding the Fourth Proportional to 288,660.72, 398,344.90 and 161,348.16

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Solution

The fourth proportional to 288,660.72, 398,344.90 and 161,348.16 is: 222,656.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,660.72 : 398,344.90 = 161,348.16 : x
  2. Step 2: Convert to fraction form
    288,660.72/398,344.90 = 161,348.16/x
  3. Step 3: Cross multiply
    288,660.72x = 398,344.90 × 161,348.16
  4. Step 4: Simplify right side
    288,660.72x = 64,272,216,660.38
  5. Step 5: Solve for x
    x = 64,272,216,660.38/288,660.72
  6. Step 6: Final answer
    x = 222,656.61

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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.