Home / 280,849.68-421,379.76-145,829.52

Finding the Fourth Proportional to 280,849.68, 421,379.76 and 145,829.52

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Solution

The fourth proportional to 280,849.68, 421,379.76 and 145,829.52 is: 218,798.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,849.68 : 421,379.76 = 145,829.52 : x
  2. Step 2: Convert to fraction form
    280,849.68/421,379.76 = 145,829.52/x
  3. Step 3: Cross multiply
    280,849.68x = 421,379.76 × 145,829.52
  4. Step 4: Simplify right side
    280,849.68x = 61,449,608,138.52
  5. Step 5: Solve for x
    x = 61,449,608,138.52/280,849.68
  6. Step 6: Final answer
    x = 218,798.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.