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Finding the Fourth Proportional to 316,999.91, 475,501.75 and 80,343.29

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Solution

The fourth proportional to 316,999.91, 475,501.75 and 80,343.29 is: 120,515.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,999.91 : 475,501.75 = 80,343.29 : x
  2. Step 2: Convert to fraction form
    316,999.91/475,501.75 = 80,343.29/x
  3. Step 3: Cross multiply
    316,999.91x = 475,501.75 × 80,343.29
  4. Step 4: Simplify right side
    316,999.91x = 38,203,374,995.76
  5. Step 5: Solve for x
    x = 38,203,374,995.76/316,999.91
  6. Step 6: Final answer
    x = 120,515.41

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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.