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Finding the Fourth Proportional to 325,833.40, 488,750.10 and 220,079.80

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Solution

The fourth proportional to 325,833.40, 488,750.10 and 220,079.80 is: 330,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,833.40 : 488,750.10 = 220,079.80 : x
  2. Step 2: Convert to fraction form
    325,833.40/488,750.10 = 220,079.80/x
  3. Step 3: Cross multiply
    325,833.40x = 488,750.10 × 220,079.80
  4. Step 4: Simplify right side
    325,833.40x = 107,564,024,257.98
  5. Step 5: Solve for x
    x = 107,564,024,257.98/325,833.40
  6. Step 6: Final answer
    x = 330,119.70

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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.