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Finding the Fourth Proportional to 226,007.42, 338,879.87 and 85,689.50

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Solution

The fourth proportional to 226,007.42, 338,879.87 and 85,689.50 is: 128,484.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,007.42 : 338,879.87 = 85,689.50 : x
  2. Step 2: Convert to fraction form
    226,007.42/338,879.87 = 85,689.50/x
  3. Step 3: Cross multiply
    226,007.42x = 338,879.87 × 85,689.50
  4. Step 4: Simplify right side
    226,007.42x = 29,038,446,191.92
  5. Step 5: Solve for x
    x = 29,038,446,191.92/226,007.42
  6. Step 6: Final answer
    x = 128,484.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.