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Finding the Fourth Proportional to 318,636.77, 477,955.17 and 118,972.73

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Solution

The fourth proportional to 318,636.77, 477,955.17 and 118,972.73 is: 178,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,636.77 : 477,955.17 = 118,972.73 : x
  2. Step 2: Convert to fraction form
    318,636.77/477,955.17 = 118,972.73/x
  3. Step 3: Cross multiply
    318,636.77x = 477,955.17 × 118,972.73
  4. Step 4: Simplify right side
    318,636.77x = 56,863,631,392.51
  5. Step 5: Solve for x
    x = 56,863,631,392.51/318,636.77
  6. Step 6: Final answer
    x = 178,459.10

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Similar ratio
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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.