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Finding the Fourth Proportional to 319,226.82, 478,981.28 and 167,387.64

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Solution

The fourth proportional to 319,226.82, 478,981.28 and 167,387.64 is: 251,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,226.82 : 478,981.28 = 167,387.64 : x
  2. Step 2: Convert to fraction form
    319,226.82/478,981.28 = 167,387.64/x
  3. Step 3: Cross multiply
    319,226.82x = 478,981.28 × 167,387.64
  4. Step 4: Simplify right side
    319,226.82x = 80,175,546,063.38
  5. Step 5: Solve for x
    x = 80,175,546,063.38/319,226.82
  6. Step 6: Final answer
    x = 251,155.42

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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.