Home / 666,651.28-1,000,081.20-217,267.72

Finding the Fourth Proportional to 666,651.28, 1,000,081.20 and 217,267.72

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Solution

The fourth proportional to 666,651.28, 1,000,081.20 and 217,267.72 is: 325,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,651.28 : 1,000,081.20 = 217,267.72 : x
  2. Step 2: Convert to fraction form
    666,651.28/1,000,081.20 = 217,267.72/x
  3. Step 3: Cross multiply
    666,651.28x = 1,000,081.20 × 217,267.72
  4. Step 4: Simplify right side
    666,651.28x = 217,285,362,138.86
  5. Step 5: Solve for x
    x = 217,285,362,138.86/666,651.28
  6. Step 6: Final answer
    x = 325,935.57

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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.