Home / 257,487.86-355,319.03-142,759.82

Finding the Fourth Proportional to 257,487.86, 355,319.03 and 142,759.82

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Solution

The fourth proportional to 257,487.86, 355,319.03 and 142,759.82 is: 197,000.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,487.86 : 355,319.03 = 142,759.82 : x
  2. Step 2: Convert to fraction form
    257,487.86/355,319.03 = 142,759.82/x
  3. Step 3: Cross multiply
    257,487.86x = 355,319.03 × 142,759.82
  4. Step 4: Simplify right side
    257,487.86x = 50,725,282,010.57
  5. Step 5: Solve for x
    x = 50,725,282,010.57/257,487.86
  6. Step 6: Final answer
    x = 197,000.67

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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.