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Finding the Fourth Proportional to 319,008.31, 478,586.51 and 108,648.07

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Solution

The fourth proportional to 319,008.31, 478,586.51 and 108,648.07 is: 162,997.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,008.31 : 478,586.51 = 108,648.07 : x
  2. Step 2: Convert to fraction form
    319,008.31/478,586.51 = 108,648.07/x
  3. Step 3: Cross multiply
    319,008.31x = 478,586.51 × 108,648.07
  4. Step 4: Simplify right side
    319,008.31x = 51,997,500,096.30
  5. Step 5: Solve for x
    x = 51,997,500,096.30/319,008.31
  6. Step 6: Final answer
    x = 162,997.32

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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.