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Finding the Fourth Proportional to 372,171.42, 513,713.52 and 211,133.52

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Solution

The fourth proportional to 372,171.42, 513,713.52 and 211,133.52 is: 291,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,171.42 : 513,713.52 = 211,133.52 : x
  2. Step 2: Convert to fraction form
    372,171.42/513,713.52 = 211,133.52/x
  3. Step 3: Cross multiply
    372,171.42x = 513,713.52 × 211,133.52
  4. Step 4: Simplify right side
    372,171.42x = 108,462,143,749.19
  5. Step 5: Solve for x
    x = 108,462,143,749.19/372,171.42
  6. Step 6: Final answer
    x = 291,430.61

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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.