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Finding the Fourth Proportional to 230,086.56, 317,518.80 and 129,484.64

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Solution

The fourth proportional to 230,086.56, 317,518.80 and 129,484.64 is: 178,688.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,086.56 : 317,518.80 = 129,484.64 : x
  2. Step 2: Convert to fraction form
    230,086.56/317,518.80 = 129,484.64/x
  3. Step 3: Cross multiply
    230,086.56x = 317,518.80 × 129,484.64
  4. Step 4: Simplify right side
    230,086.56x = 41,113,807,511.23
  5. Step 5: Solve for x
    x = 41,113,807,511.23/230,086.56
  6. Step 6: Final answer
    x = 178,688.44

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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.