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Finding the Fourth Proportional to 321,354.96, 482,328.90 and 163,700.88

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Solution

The fourth proportional to 321,354.96, 482,328.90 and 163,700.88 is: 245,702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,354.96 : 482,328.90 = 163,700.88 : x
  2. Step 2: Convert to fraction form
    321,354.96/482,328.90 = 163,700.88/x
  3. Step 3: Cross multiply
    321,354.96x = 482,328.90 × 163,700.88
  4. Step 4: Simplify right side
    321,354.96x = 78,957,665,379.43
  5. Step 5: Solve for x
    x = 78,957,665,379.43/321,354.96
  6. Step 6: Final answer
    x = 245,702.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.