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Finding the Fourth Proportional to 316,617.92, 436,932.72 and 173,386.72

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Solution

The fourth proportional to 316,617.92, 436,932.72 and 173,386.72 is: 239,273.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,617.92 : 436,932.72 = 173,386.72 : x
  2. Step 2: Convert to fraction form
    316,617.92/436,932.72 = 173,386.72/x
  3. Step 3: Cross multiply
    316,617.92x = 436,932.72 × 173,386.72
  4. Step 4: Simplify right side
    316,617.92x = 75,758,331,181.48
  5. Step 5: Solve for x
    x = 75,758,331,181.48/316,617.92
  6. Step 6: Final answer
    x = 239,273.67

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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.