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Finding the Fourth Proportional to 318,738.30, 478,052.04 and 119,060.40

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Solution

The fourth proportional to 318,738.30, 478,052.04 and 119,060.40 is: 178,569.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,738.30 : 478,052.04 = 119,060.40 : x
  2. Step 2: Convert to fraction form
    318,738.30/478,052.04 = 119,060.40/x
  3. Step 3: Cross multiply
    318,738.30x = 478,052.04 × 119,060.40
  4. Step 4: Simplify right side
    318,738.30x = 56,917,067,103.22
  5. Step 5: Solve for x
    x = 56,917,067,103.22/318,738.30
  6. Step 6: Final answer
    x = 178,569.90

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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.