Home / 307,811.20-461,716.80-130,446.40

Finding the Fourth Proportional to 307,811.20, 461,716.80 and 130,446.40

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Solution

The fourth proportional to 307,811.20, 461,716.80 and 130,446.40 is: 195,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,811.20 : 461,716.80 = 130,446.40 : x
  2. Step 2: Convert to fraction form
    307,811.20/461,716.80 = 130,446.40/x
  3. Step 3: Cross multiply
    307,811.20x = 461,716.80 × 130,446.40
  4. Step 4: Simplify right side
    307,811.20x = 60,229,294,379.52
  5. Step 5: Solve for x
    x = 60,229,294,379.52/307,811.20
  6. Step 6: Final answer
    x = 195,669.60

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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.