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Finding the Fourth Proportional to 377,764.25, 521,230.28 and 316,757.21

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Solution

The fourth proportional to 377,764.25, 521,230.28 and 316,757.21 is: 437,054.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,764.25 : 521,230.28 = 316,757.21 : x
  2. Step 2: Convert to fraction form
    377,764.25/521,230.28 = 316,757.21/x
  3. Step 3: Cross multiply
    377,764.25x = 521,230.28 × 316,757.21
  4. Step 4: Simplify right side
    377,764.25x = 165,103,445,070.38
  5. Step 5: Solve for x
    x = 165,103,445,070.38/377,764.25
  6. Step 6: Final answer
    x = 437,054.19

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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.