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Finding the Fourth Proportional to 307,615.80, 461,423.70 and 273,790.20

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Solution

The fourth proportional to 307,615.80, 461,423.70 and 273,790.20 is: 410,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,615.80 : 461,423.70 = 273,790.20 : x
  2. Step 2: Convert to fraction form
    307,615.80/461,423.70 = 273,790.20/x
  3. Step 3: Cross multiply
    307,615.80x = 461,423.70 × 273,790.20
  4. Step 4: Simplify right side
    307,615.80x = 126,333,287,107.74
  5. Step 5: Solve for x
    x = 126,333,287,107.74/307,615.80
  6. Step 6: Final answer
    x = 410,685.30

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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.