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Finding the Fourth Proportional to 659,230.20, 987,533.10 and 343,864.80

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Solution

The fourth proportional to 659,230.20, 987,533.10 and 343,864.80 is: 515,112.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,230.20 : 987,533.10 = 343,864.80 : x
  2. Step 2: Convert to fraction form
    659,230.20/987,533.10 = 343,864.80/x
  3. Step 3: Cross multiply
    659,230.20x = 987,533.10 × 343,864.80
  4. Step 4: Simplify right side
    659,230.20x = 339,577,871,924.88
  5. Step 5: Solve for x
    x = 339,577,871,924.88/659,230.20
  6. Step 6: Final answer
    x = 515,112.74

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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.