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Finding the Fourth Proportional to 372,016.30, 557,410.05 and 316,720.30

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Solution

The fourth proportional to 372,016.30, 557,410.05 and 316,720.30 is: 474,557.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,016.30 : 557,410.05 = 316,720.30 : x
  2. Step 2: Convert to fraction form
    372,016.30/557,410.05 = 316,720.30/x
  3. Step 3: Cross multiply
    372,016.30x = 557,410.05 × 316,720.30
  4. Step 4: Simplify right side
    372,016.30x = 176,543,078,259.02
  5. Step 5: Solve for x
    x = 176,543,078,259.02/372,016.30
  6. Step 6: Final answer
    x = 474,557.37

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1.5x scale

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.