Home / 257,636.90-355,416.50-171,635.86

Finding the Fourth Proportional to 257,636.90, 355,416.50 and 171,635.86

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Solution

The fourth proportional to 257,636.90, 355,416.50 and 171,635.86 is: 236,775.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,636.90 : 355,416.50 = 171,635.86 : x
  2. Step 2: Convert to fraction form
    257,636.90/355,416.50 = 171,635.86/x
  3. Step 3: Cross multiply
    257,636.90x = 355,416.50 × 171,635.86
  4. Step 4: Simplify right side
    257,636.90x = 61,002,217,509.05
  5. Step 5: Solve for x
    x = 61,002,217,509.05/257,636.90
  6. Step 6: Final answer
    x = 236,775.93

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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.