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Finding the Fourth Proportional to 485,330.33, 669,758.10 and 281,501.93

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Solution

The fourth proportional to 485,330.33, 669,758.10 and 281,501.93 is: 388,473.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,330.33 : 669,758.10 = 281,501.93 : x
  2. Step 2: Convert to fraction form
    485,330.33/669,758.10 = 281,501.93/x
  3. Step 3: Cross multiply
    485,330.33x = 669,758.10 × 281,501.93
  4. Step 4: Simplify right side
    485,330.33x = 188,538,196,375.62
  5. Step 5: Solve for x
    x = 188,538,196,375.62/485,330.33
  6. Step 6: Final answer
    x = 388,473.96

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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.