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Finding the Fourth Proportional to 499,997.54, 689,991.77 and 270,549.81

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Solution

The fourth proportional to 499,997.54, 689,991.77 and 270,549.81 is: 373,356.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,997.54 : 689,991.77 = 270,549.81 : x
  2. Step 2: Convert to fraction form
    499,997.54/689,991.77 = 270,549.81/x
  3. Step 3: Cross multiply
    499,997.54x = 689,991.77 × 270,549.81
  4. Step 4: Simplify right side
    499,997.54x = 186,677,140,922.32
  5. Step 5: Solve for x
    x = 186,677,140,922.32/499,997.54
  6. Step 6: Final answer
    x = 373,356.12

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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.