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Finding the Fourth Proportional to 355,666.20, 534,665.70 and 251,208.60

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Solution

The fourth proportional to 355,666.20, 534,665.70 and 251,208.60 is: 377,636.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,666.20 : 534,665.70 = 251,208.60 : x
  2. Step 2: Convert to fraction form
    355,666.20/534,665.70 = 251,208.60/x
  3. Step 3: Cross multiply
    355,666.20x = 534,665.70 × 251,208.60
  4. Step 4: Simplify right side
    355,666.20x = 134,312,621,965.02
  5. Step 5: Solve for x
    x = 134,312,621,965.02/355,666.20
  6. Step 6: Final answer
    x = 377,636.73

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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.