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Finding the Fourth Proportional to 666,037.97, 999,180.16 and 210,743.79

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Solution

The fourth proportional to 666,037.97, 999,180.16 and 210,743.79 is: 316,154.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,037.97 : 999,180.16 = 210,743.79 : x
  2. Step 2: Convert to fraction form
    666,037.97/999,180.16 = 210,743.79/x
  3. Step 3: Cross multiply
    666,037.97x = 999,180.16 × 210,743.79
  4. Step 4: Simplify right side
    666,037.97x = 210,571,010,942.52
  5. Step 5: Solve for x
    x = 210,571,010,942.52/666,037.97
  6. Step 6: Final answer
    x = 316,154.67

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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.