Home / 257,835.39-355,806-143,113.70

Finding the Fourth Proportional to 257,835.39, 355,806 and 143,113.70

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Solution

The fourth proportional to 257,835.39, 355,806 and 143,113.70 is: 197,493.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,835.39 : 355,806 = 143,113.70 : x
  2. Step 2: Convert to fraction form
    257,835.39/355,806 = 143,113.70/x
  3. Step 3: Cross multiply
    257,835.39x = 355,806 × 143,113.70
  4. Step 4: Simplify right side
    257,835.39x = 50,920,714,031.72
  5. Step 5: Solve for x
    x = 50,920,714,031.72/257,835.39
  6. Step 6: Final answer
    x = 197,493.12

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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.