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Finding the Fourth Proportional to 289,566.96, 434,350.56 and 79,188.96

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Solution

The fourth proportional to 289,566.96, 434,350.56 and 79,188.96 is: 118,783.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,566.96 : 434,350.56 = 79,188.96 : x
  2. Step 2: Convert to fraction form
    289,566.96/434,350.56 = 79,188.96/x
  3. Step 3: Cross multiply
    289,566.96x = 434,350.56 × 79,188.96
  4. Step 4: Simplify right side
    289,566.96x = 34,395,769,121.82
  5. Step 5: Solve for x
    x = 34,395,769,121.82/289,566.96
  6. Step 6: Final answer
    x = 118,783.47

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1.5x scale

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.