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Finding the Fourth Proportional to 323,406,522.80, 485,109,784.20 and 118,892,279.60

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Solution

The fourth proportional to 323,406,522.80, 485,109,784.20 and 118,892,279.60 is: 178,338,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,406,522.80 : 485,109,784.20 = 118,892,279.60 : x
  2. Step 2: Convert to fraction form
    323,406,522.80/485,109,784.20 = 118,892,279.60/x
  3. Step 3: Cross multiply
    323,406,522.80x = 485,109,784.20 × 118,892,279.60
  4. Step 4: Simplify right side
    323,406,522.80x = 57,675,808,099,802,056
  5. Step 5: Solve for x
    x = 57,675,808,099,802,056/323,406,522.80
  6. Step 6: Final answer
    x = 178,338,419.40

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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.