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Finding the Fourth Proportional to 315,173.76, 434,922.12 and 179,188.52

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Solution

The fourth proportional to 315,173.76, 434,922.12 and 179,188.52 is: 247,270.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,173.76 : 434,922.12 = 179,188.52 : x
  2. Step 2: Convert to fraction form
    315,173.76/434,922.12 = 179,188.52/x
  3. Step 3: Cross multiply
    315,173.76x = 434,922.12 × 179,188.52
  4. Step 4: Simplify right side
    315,173.76x = 77,933,050,998.06
  5. Step 5: Solve for x
    x = 77,933,050,998.06/315,173.76
  6. Step 6: Final answer
    x = 247,270.11

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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.