Home / 487,217.21-730,817.76-145,661.43

Finding the Fourth Proportional to 487,217.21, 730,817.76 and 145,661.43

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Solution

The fourth proportional to 487,217.21, 730,817.76 and 145,661.43 is: 218,489.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,217.21 : 730,817.76 = 145,661.43 : x
  2. Step 2: Convert to fraction form
    487,217.21/730,817.76 = 145,661.43/x
  3. Step 3: Cross multiply
    487,217.21x = 730,817.76 × 145,661.43
  4. Step 4: Simplify right side
    487,217.21x = 106,451,956,336.91
  5. Step 5: Solve for x
    x = 106,451,956,336.91/487,217.21
  6. Step 6: Final answer
    x = 218,489.73

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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.