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Finding the Fourth Proportional to 372,272.92, 513,655.50 and 211,091.64

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Solution

The fourth proportional to 372,272.92, 513,655.50 and 211,091.64 is: 291,260.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,272.92 : 513,655.50 = 211,091.64 : x
  2. Step 2: Convert to fraction form
    372,272.92/513,655.50 = 211,091.64/x
  3. Step 3: Cross multiply
    372,272.92x = 513,655.50 × 211,091.64
  4. Step 4: Simplify right side
    372,272.92x = 108,428,381,890.02
  5. Step 5: Solve for x
    x = 108,428,381,890.02/372,272.92
  6. Step 6: Final answer
    x = 291,260.46

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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.