Home / 307,405.24-424,218.44-171,439.36

Finding the Fourth Proportional to 307,405.24, 424,218.44 and 171,439.36

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Solution

The fourth proportional to 307,405.24, 424,218.44 and 171,439.36 is: 236,585.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,405.24 : 424,218.44 = 171,439.36 : x
  2. Step 2: Convert to fraction form
    307,405.24/424,218.44 = 171,439.36/x
  3. Step 3: Cross multiply
    307,405.24x = 424,218.44 × 171,439.36
  4. Step 4: Simplify right side
    307,405.24x = 72,727,737,853.80
  5. Step 5: Solve for x
    x = 72,727,737,853.80/307,405.24
  6. Step 6: Final answer
    x = 236,585.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.