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Finding the Fourth Proportional to 230,994.69, 318,763.14 and 129,019.68

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Solution

The fourth proportional to 230,994.69, 318,763.14 and 129,019.68 is: 178,041.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,994.69 : 318,763.14 = 129,019.68 : x
  2. Step 2: Convert to fraction form
    230,994.69/318,763.14 = 129,019.68/x
  3. Step 3: Cross multiply
    230,994.69x = 318,763.14 × 129,019.68
  4. Step 4: Simplify right side
    230,994.69x = 41,126,718,318.60
  5. Step 5: Solve for x
    x = 41,126,718,318.60/230,994.69
  6. Step 6: Final answer
    x = 178,041.83

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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.