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Finding the Fourth Proportional to 510,622.21, 704,652.69 and 281,174.73

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Solution

The fourth proportional to 510,622.21, 704,652.69 and 281,174.73 is: 388,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,622.21 : 704,652.69 = 281,174.73 : x
  2. Step 2: Convert to fraction form
    510,622.21/704,652.69 = 281,174.73/x
  3. Step 3: Cross multiply
    510,622.21x = 704,652.69 × 281,174.73
  4. Step 4: Simplify right side
    510,622.21x = 198,130,529,854.52
  5. Step 5: Solve for x
    x = 198,130,529,854.52/510,622.21
  6. Step 6: Final answer
    x = 388,017.85

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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.