Home / 257,211.72-355,075.38-171,313.65

Finding the Fourth Proportional to 257,211.72, 355,075.38 and 171,313.65

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Solution

The fourth proportional to 257,211.72, 355,075.38 and 171,313.65 is: 236,494.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,211.72 : 355,075.38 = 171,313.65 : x
  2. Step 2: Convert to fraction form
    257,211.72/355,075.38 = 171,313.65/x
  3. Step 3: Cross multiply
    257,211.72x = 355,075.38 × 171,313.65
  4. Step 4: Simplify right side
    257,211.72x = 60,829,259,372.94
  5. Step 5: Solve for x
    x = 60,829,259,372.94/257,211.72
  6. Step 6: Final answer
    x = 236,494.90

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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.