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Finding the Fourth Proportional to 230,676.56, 318,337.80 and 135,210.32

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Solution

The fourth proportional to 230,676.56, 318,337.80 and 135,210.32 is: 186,592.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,676.56 : 318,337.80 = 135,210.32 : x
  2. Step 2: Convert to fraction form
    230,676.56/318,337.80 = 135,210.32/x
  3. Step 3: Cross multiply
    230,676.56x = 318,337.80 × 135,210.32
  4. Step 4: Simplify right side
    230,676.56x = 43,042,555,806.10
  5. Step 5: Solve for x
    x = 43,042,555,806.10/230,676.56
  6. Step 6: Final answer
    x = 186,592.67

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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.