Home / 398,669.33-550,143.44-217,379.79

Finding the Fourth Proportional to 398,669.33, 550,143.44 and 217,379.79

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Solution

The fourth proportional to 398,669.33, 550,143.44 and 217,379.79 is: 299,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,669.33 : 550,143.44 = 217,379.79 : x
  2. Step 2: Convert to fraction form
    398,669.33/550,143.44 = 217,379.79/x
  3. Step 3: Cross multiply
    398,669.33x = 550,143.44 × 217,379.79
  4. Step 4: Simplify right side
    398,669.33x = 119,590,064,370.18
  5. Step 5: Solve for x
    x = 119,590,064,370.18/398,669.33
  6. Step 6: Final answer
    x = 299,973.08

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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.