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Finding the Fourth Proportional to 308,747.20, 463,120.80 and 168,779.20

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Solution

The fourth proportional to 308,747.20, 463,120.80 and 168,779.20 is: 253,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,747.20 : 463,120.80 = 168,779.20 : x
  2. Step 2: Convert to fraction form
    308,747.20/463,120.80 = 168,779.20/x
  3. Step 3: Cross multiply
    308,747.20x = 463,120.80 × 168,779.20
  4. Step 4: Simplify right side
    308,747.20x = 78,165,158,127.36
  5. Step 5: Solve for x
    x = 78,165,158,127.36/308,747.20
  6. Step 6: Final answer
    x = 253,168.80

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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.