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Finding the Fourth Proportional to 315,910.11, 435,955.86 and 179,956.65

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Solution

The fourth proportional to 315,910.11, 435,955.86 and 179,956.65 is: 248,340.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,910.11 : 435,955.86 = 179,956.65 : x
  2. Step 2: Convert to fraction form
    315,910.11/435,955.86 = 179,956.65/x
  3. Step 3: Cross multiply
    315,910.11x = 435,955.86 × 179,956.65
  4. Step 4: Simplify right side
    315,910.11x = 78,453,156,113.47
  5. Step 5: Solve for x
    x = 78,453,156,113.47/315,910.11
  6. Step 6: Final answer
    x = 248,340.12

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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.