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Finding the Fourth Proportional to 499,669.20, 689,537.88 and 273,312

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Solution

The fourth proportional to 499,669.20, 689,537.88 and 273,312 is: 377,167.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,669.20 : 689,537.88 = 273,312 : x
  2. Step 2: Convert to fraction form
    499,669.20/689,537.88 = 273,312/x
  3. Step 3: Cross multiply
    499,669.20x = 689,537.88 × 273,312
  4. Step 4: Simplify right side
    499,669.20x = 188,458,977,058.56
  5. Step 5: Solve for x
    x = 188,458,977,058.56/499,669.20
  6. Step 6: Final answer
    x = 377,167.49

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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.