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Finding the Fourth Proportional to 319,879.40, 441,425.07 and 176,636.39

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Solution

The fourth proportional to 319,879.40, 441,425.07 and 176,636.39 is: 243,753.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,879.40 : 441,425.07 = 176,636.39 : x
  2. Step 2: Convert to fraction form
    319,879.40/441,425.07 = 176,636.39/x
  3. Step 3: Cross multiply
    319,879.40x = 441,425.07 × 176,636.39
  4. Step 4: Simplify right side
    319,879.40x = 77,971,728,613.17
  5. Step 5: Solve for x
    x = 77,971,728,613.17/319,879.40
  6. Step 6: Final answer
    x = 243,753.52

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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.