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Finding the Fourth Proportional to 307,675.40, 461,513.10 and 218,445.80

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Solution

The fourth proportional to 307,675.40, 461,513.10 and 218,445.80 is: 327,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,675.40 : 461,513.10 = 218,445.80 : x
  2. Step 2: Convert to fraction form
    307,675.40/461,513.10 = 218,445.80/x
  3. Step 3: Cross multiply
    307,675.40x = 461,513.10 × 218,445.80
  4. Step 4: Simplify right side
    307,675.40x = 100,815,598,339.98
  5. Step 5: Solve for x
    x = 100,815,598,339.98/307,675.40
  6. Step 6: Final answer
    x = 327,668.70

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1.5x scale

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.