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Finding the Fourth Proportional to 446,307.78, 669,467.10 and 130,771.08

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Solution

The fourth proportional to 446,307.78, 669,467.10 and 130,771.08 is: 196,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,307.78 : 669,467.10 = 130,771.08 : x
  2. Step 2: Convert to fraction form
    446,307.78/669,467.10 = 130,771.08/x
  3. Step 3: Cross multiply
    446,307.78x = 669,467.10 × 130,771.08
  4. Step 4: Simplify right side
    446,307.78x = 87,546,935,691.47
  5. Step 5: Solve for x
    x = 87,546,935,691.47/446,307.78
  6. Step 6: Final answer
    x = 196,158.21

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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.