Home / 398,727.39-550,257-217,454.25

Finding the Fourth Proportional to 398,727.39, 550,257 and 217,454.25

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Solution

The fourth proportional to 398,727.39, 550,257 and 217,454.25 is: 300,094.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,727.39 : 550,257 = 217,454.25 : x
  2. Step 2: Convert to fraction form
    398,727.39/550,257 = 217,454.25/x
  3. Step 3: Cross multiply
    398,727.39x = 550,257 × 217,454.25
  4. Step 4: Simplify right side
    398,727.39x = 119,655,723,242.25
  5. Step 5: Solve for x
    x = 119,655,723,242.25/398,727.39
  6. Step 6: Final answer
    x = 300,094.06

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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.