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Finding the Fourth Proportional to 426,251.76, 639,497.52 and 186,386.76

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Solution

The fourth proportional to 426,251.76, 639,497.52 and 186,386.76 is: 279,632.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,251.76 : 639,497.52 = 186,386.76 : x
  2. Step 2: Convert to fraction form
    426,251.76/639,497.52 = 186,386.76/x
  3. Step 3: Cross multiply
    426,251.76x = 639,497.52 × 186,386.76
  4. Step 4: Simplify right side
    426,251.76x = 119,193,870,780.84
  5. Step 5: Solve for x
    x = 119,193,870,780.84/426,251.76
  6. Step 6: Final answer
    x = 279,632.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.