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Finding the Fourth Proportional to 316,562.84, 436,856.78 and 173,332.12

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Solution

The fourth proportional to 316,562.84, 436,856.78 and 173,332.12 is: 239,198.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,562.84 : 436,856.78 = 173,332.12 : x
  2. Step 2: Convert to fraction form
    316,562.84/436,856.78 = 173,332.12/x
  3. Step 3: Cross multiply
    316,562.84x = 436,856.78 × 173,332.12
  4. Step 4: Simplify right side
    316,562.84x = 75,721,311,813.77
  5. Step 5: Solve for x
    x = 75,721,311,813.77/316,562.84
  6. Step 6: Final answer
    x = 239,198.36

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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.