Home / 217,285.10-325,911.45-90,892.70

Finding the Fourth Proportional to 217,285.10, 325,911.45 and 90,892.70

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Solution

The fourth proportional to 217,285.10, 325,911.45 and 90,892.70 is: 136,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,285.10 : 325,911.45 = 90,892.70 : x
  2. Step 2: Convert to fraction form
    217,285.10/325,911.45 = 90,892.70/x
  3. Step 3: Cross multiply
    217,285.10x = 325,911.45 × 90,892.70
  4. Step 4: Simplify right side
    217,285.10x = 29,622,971,651.42
  5. Step 5: Solve for x
    x = 29,622,971,651.42/217,285.10
  6. Step 6: Final answer
    x = 136,332.27

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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.