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Finding the Fourth Proportional to 543,638.90, 816,333.15 and 366,929.30

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Solution

The fourth proportional to 543,638.90, 816,333.15 and 366,929.30 is: 550,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,638.90 : 816,333.15 = 366,929.30 : x
  2. Step 2: Convert to fraction form
    543,638.90/816,333.15 = 366,929.30/x
  3. Step 3: Cross multiply
    543,638.90x = 816,333.15 × 366,929.30
  4. Step 4: Simplify right side
    543,638.90x = 299,536,551,296.30
  5. Step 5: Solve for x
    x = 299,536,551,296.30/543,638.90
  6. Step 6: Final answer
    x = 550,984.40

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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.