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Finding the Fourth Proportional to 311,000.55, 429,221.99 and 175,060.88

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Solution

The fourth proportional to 311,000.55, 429,221.99 and 175,060.88 is: 241,607.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,000.55 : 429,221.99 = 175,060.88 : x
  2. Step 2: Convert to fraction form
    311,000.55/429,221.99 = 175,060.88/x
  3. Step 3: Cross multiply
    311,000.55x = 429,221.99 × 175,060.88
  4. Step 4: Simplify right side
    311,000.55x = 75,139,979,284.75
  5. Step 5: Solve for x
    x = 75,139,979,284.75/311,000.55
  6. Step 6: Final answer
    x = 241,607.22

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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.