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Finding the Fourth Proportional to 217,472.99, 300,040.40 and 131,458.28

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Solution

The fourth proportional to 217,472.99, 300,040.40 and 131,458.28 is: 181,368.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,472.99 : 300,040.40 = 131,458.28 : x
  2. Step 2: Convert to fraction form
    217,472.99/300,040.40 = 131,458.28/x
  3. Step 3: Cross multiply
    217,472.99x = 300,040.40 × 131,458.28
  4. Step 4: Simplify right side
    217,472.99x = 39,442,793,742.96
  5. Step 5: Solve for x
    x = 39,442,793,742.96/217,472.99
  6. Step 6: Final answer
    x = 181,368.71

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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.