Home / 377,370.29-521,518.19-309,279.87

Finding the Fourth Proportional to 377,370.29, 521,518.19 and 309,279.87

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Solution

The fourth proportional to 377,370.29, 521,518.19 and 309,279.87 is: 427,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,370.29 : 521,518.19 = 309,279.87 : x
  2. Step 2: Convert to fraction form
    377,370.29/521,518.19 = 309,279.87/x
  3. Step 3: Cross multiply
    377,370.29x = 521,518.19 × 309,279.87
  4. Step 4: Simplify right side
    377,370.29x = 161,295,078,005.84
  5. Step 5: Solve for x
    x = 161,295,078,005.84/377,370.29
  6. Step 6: Final answer
    x = 427,418.59

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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.