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Finding the Fourth Proportional to 377,761.25, 521,226.14 and 316,754.21

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Solution

The fourth proportional to 377,761.25, 521,226.14 and 316,754.21 is: 437,050.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,761.25 : 521,226.14 = 316,754.21 : x
  2. Step 2: Convert to fraction form
    377,761.25/521,226.14 = 316,754.21/x
  3. Step 3: Cross multiply
    377,761.25x = 521,226.14 × 316,754.21
  4. Step 4: Simplify right side
    377,761.25x = 165,100,570,017.15
  5. Step 5: Solve for x
    x = 165,100,570,017.15/377,761.25
  6. Step 6: Final answer
    x = 437,050.05

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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.