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Finding the Fourth Proportional to 318,660.60, 476,954.10 and 248,158.20

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Solution

The fourth proportional to 318,660.60, 476,954.10 and 248,158.20 is: 371,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,660.60 : 476,954.10 = 248,158.20 : x
  2. Step 2: Convert to fraction form
    318,660.60/476,954.10 = 248,158.20/x
  3. Step 3: Cross multiply
    318,660.60x = 476,954.10 × 248,158.20
  4. Step 4: Simplify right side
    318,660.60x = 118,360,070,938.62
  5. Step 5: Solve for x
    x = 118,360,070,938.62/318,660.60
  6. Step 6: Final answer
    x = 371,429.89

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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.