Home / 213,331.68-294,357-128,454.24

Finding the Fourth Proportional to 213,331.68, 294,357 and 128,454.24

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Solution

The fourth proportional to 213,331.68, 294,357 and 128,454.24 is: 177,242.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,331.68 : 294,357 = 128,454.24 : x
  2. Step 2: Convert to fraction form
    213,331.68/294,357 = 128,454.24/x
  3. Step 3: Cross multiply
    213,331.68x = 294,357 × 128,454.24
  4. Step 4: Simplify right side
    213,331.68x = 37,811,404,723.68
  5. Step 5: Solve for x
    x = 37,811,404,723.68/213,331.68
  6. Step 6: Final answer
    x = 177,242.33

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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.