Home / 398,515.14-549,939.94-217,230.61

Finding the Fourth Proportional to 398,515.14, 549,939.94 and 217,230.61

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Solution

The fourth proportional to 398,515.14, 549,939.94 and 217,230.61 is: 299,772.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,515.14 : 549,939.94 = 217,230.61 : x
  2. Step 2: Convert to fraction form
    398,515.14/549,939.94 = 217,230.61/x
  3. Step 3: Cross multiply
    398,515.14x = 549,939.94 × 217,230.61
  4. Step 4: Simplify right side
    398,515.14x = 119,463,789,270.18
  5. Step 5: Solve for x
    x = 119,463,789,270.18/398,515.14
  6. Step 6: Final answer
    x = 299,772.27

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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.