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Finding the Fourth Proportional to 368,376.30, 508,354.45 and 207,231.30

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Solution

The fourth proportional to 368,376.30, 508,354.45 and 207,231.30 is: 285,976.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,376.30 : 508,354.45 = 207,231.30 : x
  2. Step 2: Convert to fraction form
    368,376.30/508,354.45 = 207,231.30/x
  3. Step 3: Cross multiply
    368,376.30x = 508,354.45 × 207,231.30
  4. Step 4: Simplify right side
    368,376.30x = 105,346,953,016.21
  5. Step 5: Solve for x
    x = 105,346,953,016.21/368,376.30
  6. Step 6: Final answer
    x = 285,976.47

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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.