Home / 213,318.28-294,286.26-128,387.08

Finding the Fourth Proportional to 213,318.28, 294,286.26 and 128,387.08

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Solution

The fourth proportional to 213,318.28, 294,286.26 and 128,387.08 is: 177,118.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,318.28 : 294,286.26 = 128,387.08 : x
  2. Step 2: Convert to fraction form
    213,318.28/294,286.26 = 128,387.08/x
  3. Step 3: Cross multiply
    213,318.28x = 294,286.26 × 128,387.08
  4. Step 4: Simplify right side
    213,318.28x = 37,782,553,605.52
  5. Step 5: Solve for x
    x = 37,782,553,605.52/213,318.28
  6. Step 6: Final answer
    x = 177,118.22

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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.