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Finding the Fourth Proportional to 291,993.76, 437,991.02 and 70,377.76

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Solution

The fourth proportional to 291,993.76, 437,991.02 and 70,377.76 is: 105,566.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,993.76 : 437,991.02 = 70,377.76 : x
  2. Step 2: Convert to fraction form
    291,993.76/437,991.02 = 70,377.76/x
  3. Step 3: Cross multiply
    291,993.76x = 437,991.02 × 70,377.76
  4. Step 4: Simplify right side
    291,993.76x = 30,824,826,887.72
  5. Step 5: Solve for x
    x = 30,824,826,887.72/291,993.76
  6. Step 6: Final answer
    x = 105,566.73

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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.