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Finding the Fourth Proportional to 485,037.33, 669,351.51 and 281,206.50

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Solution

The fourth proportional to 485,037.33, 669,351.51 and 281,206.50 is: 388,064.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,037.33 : 669,351.51 = 281,206.50 : x
  2. Step 2: Convert to fraction form
    485,037.33/669,351.51 = 281,206.50/x
  3. Step 3: Cross multiply
    485,037.33x = 669,351.51 × 281,206.50
  4. Step 4: Simplify right side
    485,037.33x = 188,225,995,396.82
  5. Step 5: Solve for x
    x = 188,225,995,396.82/485,037.33
  6. Step 6: Final answer
    x = 388,064.97

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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.