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Finding the Fourth Proportional to 384,808.94, 531,037.06 and 215,043.07

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Solution

The fourth proportional to 384,808.94, 531,037.06 and 215,043.07 is: 296,759.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,808.94 : 531,037.06 = 215,043.07 : x
  2. Step 2: Convert to fraction form
    384,808.94/531,037.06 = 215,043.07/x
  3. Step 3: Cross multiply
    384,808.94x = 531,037.06 × 215,043.07
  4. Step 4: Simplify right side
    384,808.94x = 114,195,837,010.99
  5. Step 5: Solve for x
    x = 114,195,837,010.99/384,808.94
  6. Step 6: Final answer
    x = 296,759.83

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1.5x scale

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.