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Finding the Fourth Proportional to 318,956.32, 478,447.85 and 119,256.49

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Solution

The fourth proportional to 318,956.32, 478,447.85 and 119,256.49 is: 178,889.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,956.32 : 478,447.85 = 119,256.49 : x
  2. Step 2: Convert to fraction form
    318,956.32/478,447.85 = 119,256.49/x
  3. Step 3: Cross multiply
    318,956.32x = 478,447.85 × 119,256.49
  4. Step 4: Simplify right side
    318,956.32x = 57,058,011,239.05
  5. Step 5: Solve for x
    x = 57,058,011,239.05/318,956.32
  6. Step 6: Final answer
    x = 178,889.73

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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.