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Finding the Fourth Proportional to 510,620.71, 704,650.65 and 281,173.24

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Solution

The fourth proportional to 510,620.71, 704,650.65 and 281,173.24 is: 388,015.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,620.71 : 704,650.65 = 281,173.24 : x
  2. Step 2: Convert to fraction form
    510,620.71/704,650.65 = 281,173.24/x
  3. Step 3: Cross multiply
    510,620.71x = 704,650.65 × 281,173.24
  4. Step 4: Simplify right side
    510,620.71x = 198,128,906,328.61
  5. Step 5: Solve for x
    x = 198,128,906,328.61/510,620.71
  6. Step 6: Final answer
    x = 388,015.81

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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.