Home / 398,827.49-550,585.11-307,979.51

Finding the Fourth Proportional to 398,827.49, 550,585.11 and 307,979.51

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Solution

The fourth proportional to 398,827.49, 550,585.11 and 307,979.51 is: 425,168.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,827.49 : 550,585.11 = 307,979.51 : x
  2. Step 2: Convert to fraction form
    398,827.49/550,585.11 = 307,979.51/x
  3. Step 3: Cross multiply
    398,827.49x = 550,585.11 × 307,979.51
  4. Step 4: Simplify right side
    398,827.49x = 169,568,934,537.51
  5. Step 5: Solve for x
    x = 169,568,934,537.51/398,827.49
  6. Step 6: Final answer
    x = 425,168.62

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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.