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Finding the Fourth Proportional to 355,899.37, 491,150.76 and 218,075.90

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Solution

The fourth proportional to 355,899.37, 491,150.76 and 218,075.90 is: 300,950.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,899.37 : 491,150.76 = 218,075.90 : x
  2. Step 2: Convert to fraction form
    355,899.37/491,150.76 = 218,075.90/x
  3. Step 3: Cross multiply
    355,899.37x = 491,150.76 × 218,075.90
  4. Step 4: Simplify right side
    355,899.37x = 107,108,144,022.68
  5. Step 5: Solve for x
    x = 107,108,144,022.68/355,899.37
  6. Step 6: Final answer
    x = 300,950.64

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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.