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Finding the Fourth Proportional to 537,992.12, 742,414.38 and 308,587.88

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Solution

The fourth proportional to 537,992.12, 742,414.38 and 308,587.88 is: 425,842.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,992.12 : 742,414.38 = 308,587.88 : x
  2. Step 2: Convert to fraction form
    537,992.12/742,414.38 = 308,587.88/x
  3. Step 3: Cross multiply
    537,992.12x = 742,414.38 × 308,587.88
  4. Step 4: Simplify right side
    537,992.12x = 229,100,079,605.71
  5. Step 5: Solve for x
    x = 229,100,079,605.71/537,992.12
  6. Step 6: Final answer
    x = 425,842.82

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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.