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Finding the Fourth Proportional to 311,353.72, 429,654.81 and 173,525.29

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Solution

The fourth proportional to 311,353.72, 429,654.81 and 173,525.29 is: 239,457.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,353.72 : 429,654.81 = 173,525.29 : x
  2. Step 2: Convert to fraction form
    311,353.72/429,654.81 = 173,525.29/x
  3. Step 3: Cross multiply
    311,353.72x = 429,654.81 × 173,525.29
  4. Step 4: Simplify right side
    311,353.72x = 74,555,977,498.54
  5. Step 5: Solve for x
    x = 74,555,977,498.54/311,353.72
  6. Step 6: Final answer
    x = 239,457.48

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1.5x scale

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.