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Finding the Fourth Proportional to 372,556.50, 513,148.56 and 286,350.64

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Solution

The fourth proportional to 372,556.50, 513,148.56 and 286,350.64 is: 394,411.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,556.50 : 513,148.56 = 286,350.64 : x
  2. Step 2: Convert to fraction form
    372,556.50/513,148.56 = 286,350.64/x
  3. Step 3: Cross multiply
    372,556.50x = 513,148.56 × 286,350.64
  4. Step 4: Simplify right side
    372,556.50x = 146,940,418,571.08
  5. Step 5: Solve for x
    x = 146,940,418,571.08/372,556.50
  6. Step 6: Final answer
    x = 394,411.10

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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.