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Finding the Fourth Proportional to 319,262.33, 478,893.51 and 108,902.09

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Solution

The fourth proportional to 319,262.33, 478,893.51 and 108,902.09 is: 163,353.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,262.33 : 478,893.51 = 108,902.09 : x
  2. Step 2: Convert to fraction form
    319,262.33/478,893.51 = 108,902.09/x
  3. Step 3: Cross multiply
    319,262.33x = 478,893.51 × 108,902.09
  4. Step 4: Simplify right side
    319,262.33x = 52,152,505,323.67
  5. Step 5: Solve for x
    x = 52,152,505,323.67/319,262.33
  6. Step 6: Final answer
    x = 163,353.14

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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.