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Finding the Fourth Proportional to 315,709.88, 473,635.29 and 166,020.80

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Solution

The fourth proportional to 315,709.88, 473,635.29 and 166,020.80 is: 249,068.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,709.88 : 473,635.29 = 166,020.80 : x
  2. Step 2: Convert to fraction form
    315,709.88/473,635.29 = 166,020.80/x
  3. Step 3: Cross multiply
    315,709.88x = 473,635.29 × 166,020.80
  4. Step 4: Simplify right side
    315,709.88x = 78,633,309,754.03
  5. Step 5: Solve for x
    x = 78,633,309,754.03/315,709.88
  6. Step 6: Final answer
    x = 249,068.26

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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.