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Finding the Fourth Proportional to 377,874.07, 521,522.90 and 287,080.63

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Solution

The fourth proportional to 377,874.07, 521,522.90 and 287,080.63 is: 396,214.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,874.07 : 521,522.90 = 287,080.63 : x
  2. Step 2: Convert to fraction form
    377,874.07/521,522.90 = 287,080.63/x
  3. Step 3: Cross multiply
    377,874.07x = 521,522.90 × 287,080.63
  4. Step 4: Simplify right side
    377,874.07x = 149,719,120,801.51
  5. Step 5: Solve for x
    x = 149,719,120,801.51/377,874.07
  6. Step 6: Final answer
    x = 396,214.33

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1.5x scale

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.