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Finding the Fourth Proportional to 372,016.80, 557,410.80 and 316,720.80

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Solution

The fourth proportional to 372,016.80, 557,410.80 and 316,720.80 is: 474,558.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,016.80 : 557,410.80 = 316,720.80 : x
  2. Step 2: Convert to fraction form
    372,016.80/557,410.80 = 316,720.80/x
  3. Step 3: Cross multiply
    372,016.80x = 557,410.80 × 316,720.80
  4. Step 4: Simplify right side
    372,016.80x = 176,543,594,504.64
  5. Step 5: Solve for x
    x = 176,543,594,504.64/372,016.80
  6. Step 6: Final answer
    x = 474,558.12

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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.