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Finding the Fourth Proportional to 291,696.45, 437,544.57 and 70,080.45

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Solution

The fourth proportional to 291,696.45, 437,544.57 and 70,080.45 is: 105,120.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,696.45 : 437,544.57 = 70,080.45 : x
  2. Step 2: Convert to fraction form
    291,696.45/437,544.57 = 70,080.45/x
  3. Step 3: Cross multiply
    291,696.45x = 437,544.57 × 70,080.45
  4. Step 4: Simplify right side
    291,696.45x = 30,663,320,360.66
  5. Step 5: Solve for x
    x = 30,663,320,360.66/291,696.45
  6. Step 6: Final answer
    x = 105,120.65

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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.