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Finding the Fourth Proportional to 230,663.92, 318,348 and 135,208.72

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Solution

The fourth proportional to 230,663.92, 318,348 and 135,208.72 is: 186,606.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,663.92 : 318,348 = 135,208.72 : x
  2. Step 2: Convert to fraction form
    230,663.92/318,348 = 135,208.72/x
  3. Step 3: Cross multiply
    230,663.92x = 318,348 × 135,208.72
  4. Step 4: Simplify right side
    230,663.92x = 43,043,425,594.56
  5. Step 5: Solve for x
    x = 43,043,425,594.56/230,663.92
  6. Step 6: Final answer
    x = 186,606.67

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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.