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Finding the Fourth Proportional to 439,293.62, 658,690.63 and 172,909.70

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Solution

The fourth proportional to 439,293.62, 658,690.63 and 172,909.70 is: 259,266.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,293.62 : 658,690.63 = 172,909.70 : x
  2. Step 2: Convert to fraction form
    439,293.62/658,690.63 = 172,909.70/x
  3. Step 3: Cross multiply
    439,293.62x = 658,690.63 × 172,909.70
  4. Step 4: Simplify right side
    439,293.62x = 113,893,999,226.11
  5. Step 5: Solve for x
    x = 113,893,999,226.11/439,293.62
  6. Step 6: Final answer
    x = 259,266.23

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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.