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Finding the Fourth Proportional to 321,479.18, 482,507.87 and 171,847.38

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Solution

The fourth proportional to 321,479.18, 482,507.87 and 171,847.38 is: 257,925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,479.18 : 482,507.87 = 171,847.38 : x
  2. Step 2: Convert to fraction form
    321,479.18/482,507.87 = 171,847.38/x
  3. Step 3: Cross multiply
    321,479.18x = 482,507.87 × 171,847.38
  4. Step 4: Simplify right side
    321,479.18x = 82,917,710,876.34
  5. Step 5: Solve for x
    x = 82,917,710,876.34/321,479.18
  6. Step 6: Final answer
    x = 257,925.60

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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.