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Finding the Fourth Proportional to 318,837.67, 478,242.67 and 119,159.79

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Solution

The fourth proportional to 318,837.67, 478,242.67 and 119,159.79 is: 178,734.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,837.67 : 478,242.67 = 119,159.79 : x
  2. Step 2: Convert to fraction form
    318,837.67/478,242.67 = 119,159.79/x
  3. Step 3: Cross multiply
    318,837.67x = 478,242.67 × 119,159.79
  4. Step 4: Simplify right side
    318,837.67x = 56,987,295,828.34
  5. Step 5: Solve for x
    x = 56,987,295,828.34/318,837.67
  6. Step 6: Final answer
    x = 178,734.51

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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.