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Finding the Fourth Proportional to 318,997.26, 478,564.54 and 159,159.15

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Solution

The fourth proportional to 318,997.26, 478,564.54 and 159,159.15 is: 238,772.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,997.26 : 478,564.54 = 159,159.15 : x
  2. Step 2: Convert to fraction form
    318,997.26/478,564.54 = 159,159.15/x
  3. Step 3: Cross multiply
    318,997.26x = 478,564.54 × 159,159.15
  4. Step 4: Simplify right side
    318,997.26x = 76,167,925,008.64
  5. Step 5: Solve for x
    x = 76,167,925,008.64/318,997.26
  6. Step 6: Final answer
    x = 238,772.98

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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.