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Finding the Fourth Proportional to 330,220.88, 455,700.80 and 179,318.96

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Solution

The fourth proportional to 330,220.88, 455,700.80 and 179,318.96 is: 247,457.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,220.88 : 455,700.80 = 179,318.96 : x
  2. Step 2: Convert to fraction form
    330,220.88/455,700.80 = 179,318.96/x
  3. Step 3: Cross multiply
    330,220.88x = 455,700.80 × 179,318.96
  4. Step 4: Simplify right side
    330,220.88x = 81,715,793,527.17
  5. Step 5: Solve for x
    x = 81,715,793,527.17/330,220.88
  6. Step 6: Final answer
    x = 247,457.98

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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.