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Finding the Fourth Proportional to 318,838.67, 478,244.17 and 119,160.79

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Solution

The fourth proportional to 318,838.67, 478,244.17 and 119,160.79 is: 178,736.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,838.67 : 478,244.17 = 119,160.79 : x
  2. Step 2: Convert to fraction form
    318,838.67/478,244.17 = 119,160.79/x
  3. Step 3: Cross multiply
    318,838.67x = 478,244.17 × 119,160.79
  4. Step 4: Simplify right side
    318,838.67x = 56,987,953,110.09
  5. Step 5: Solve for x
    x = 56,987,953,110.09/318,838.67
  6. Step 6: Final answer
    x = 178,736.01

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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.