Home / 257,845.20-355,820.85-143,117.16

Finding the Fourth Proportional to 257,845.20, 355,820.85 and 143,117.16

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Solution

The fourth proportional to 257,845.20, 355,820.85 and 143,117.16 is: 197,498.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,845.20 : 355,820.85 = 143,117.16 : x
  2. Step 2: Convert to fraction form
    257,845.20/355,820.85 = 143,117.16/x
  3. Step 3: Cross multiply
    257,845.20x = 355,820.85 × 143,117.16
  4. Step 4: Simplify right side
    257,845.20x = 50,924,069,520.79
  5. Step 5: Solve for x
    x = 50,924,069,520.79/257,845.20
  6. Step 6: Final answer
    x = 197,498.61

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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.