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Finding the Fourth Proportional to 358,819.80, 495,081.90 and 231,342

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Solution

The fourth proportional to 358,819.80, 495,081.90 and 231,342 is: 319,194.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,819.80 : 495,081.90 = 231,342 : x
  2. Step 2: Convert to fraction form
    358,819.80/495,081.90 = 231,342/x
  3. Step 3: Cross multiply
    358,819.80x = 495,081.90 × 231,342
  4. Step 4: Simplify right side
    358,819.80x = 114,533,236,909.80
  5. Step 5: Solve for x
    x = 114,533,236,909.80/358,819.80
  6. Step 6: Final answer
    x = 319,194.31

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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.