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Finding the Fourth Proportional to 351,037.80, 484,434.52 and 215,072

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Solution

The fourth proportional to 351,037.80, 484,434.52 and 215,072 is: 296,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,037.80 : 484,434.52 = 215,072 : x
  2. Step 2: Convert to fraction form
    351,037.80/484,434.52 = 215,072/x
  3. Step 3: Cross multiply
    351,037.80x = 484,434.52 × 215,072
  4. Step 4: Simplify right side
    351,037.80x = 104,188,301,085.44
  5. Step 5: Solve for x
    x = 104,188,301,085.44/351,037.80
  6. Step 6: Final answer
    x = 296,800.80

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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.