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Finding the Fourth Proportional to 661,847.82, 991,899.30 and 262,270.62

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Solution

The fourth proportional to 661,847.82, 991,899.30 and 262,270.62 is: 393,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,847.82 : 991,899.30 = 262,270.62 : x
  2. Step 2: Convert to fraction form
    661,847.82/991,899.30 = 262,270.62/x
  3. Step 3: Cross multiply
    661,847.82x = 991,899.30 × 262,270.62
  4. Step 4: Simplify right side
    661,847.82x = 260,146,044,388.57
  5. Step 5: Solve for x
    x = 260,146,044,388.57/661,847.82
  6. Step 6: Final answer
    x = 393,060.21

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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.