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Finding the Fourth Proportional to 318,694.83, 478,093.68 and 129,166.98

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Solution

The fourth proportional to 318,694.83, 478,093.68 and 129,166.98 is: 193,771.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,694.83 : 478,093.68 = 129,166.98 : x
  2. Step 2: Convert to fraction form
    318,694.83/478,093.68 = 129,166.98/x
  3. Step 3: Cross multiply
    318,694.83x = 478,093.68 × 129,166.98
  4. Step 4: Simplify right side
    318,694.83x = 61,753,916,802.69
  5. Step 5: Solve for x
    x = 61,753,916,802.69/318,694.83
  6. Step 6: Final answer
    x = 193,771.32

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1.5x scale

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.