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Finding the Fourth Proportional to 372,436.38, 557,088.84 and 313,956

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Solution

The fourth proportional to 372,436.38, 557,088.84 and 313,956 is: 469,614.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,436.38 : 557,088.84 = 313,956 : x
  2. Step 2: Convert to fraction form
    372,436.38/557,088.84 = 313,956/x
  3. Step 3: Cross multiply
    372,436.38x = 557,088.84 × 313,956
  4. Step 4: Simplify right side
    372,436.38x = 174,901,383,851.04
  5. Step 5: Solve for x
    x = 174,901,383,851.04/372,436.38
  6. Step 6: Final answer
    x = 469,614.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.