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Finding the Fourth Proportional to 358,998.92, 495,502.94 and 223,135.48

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Solution

The fourth proportional to 358,998.92, 495,502.94 and 223,135.48 is: 307,979.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,998.92 : 495,502.94 = 223,135.48 : x
  2. Step 2: Convert to fraction form
    358,998.92/495,502.94 = 223,135.48/x
  3. Step 3: Cross multiply
    358,998.92x = 495,502.94 × 223,135.48
  4. Step 4: Simplify right side
    358,998.92x = 110,564,286,358.31
  5. Step 5: Solve for x
    x = 110,564,286,358.31/358,998.92
  6. Step 6: Final answer
    x = 307,979.44

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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.