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Finding the Fourth Proportional to 230,999.61, 318,756.94 and 129,016.96

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Solution

The fourth proportional to 230,999.61, 318,756.94 and 129,016.96 is: 178,030.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,999.61 : 318,756.94 = 129,016.96 : x
  2. Step 2: Convert to fraction form
    230,999.61/318,756.94 = 129,016.96/x
  3. Step 3: Cross multiply
    230,999.61x = 318,756.94 × 129,016.96
  4. Step 4: Simplify right side
    230,999.61x = 41,125,051,377.70
  5. Step 5: Solve for x
    x = 41,125,051,377.70/230,999.61
  6. Step 6: Final answer
    x = 178,030.83

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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.