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Finding the Fourth Proportional to 288,992.71, 398,890.16 and 168,157.42

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Solution

The fourth proportional to 288,992.71, 398,890.16 and 168,157.42 is: 232,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,992.71 : 398,890.16 = 168,157.42 : x
  2. Step 2: Convert to fraction form
    288,992.71/398,890.16 = 168,157.42/x
  3. Step 3: Cross multiply
    288,992.71x = 398,890.16 × 168,157.42
  4. Step 4: Simplify right side
    288,992.71x = 67,076,339,592.16
  5. Step 5: Solve for x
    x = 67,076,339,592.16/288,992.71
  6. Step 6: Final answer
    x = 232,103.92

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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.