Home / 372,455.63-513,989.18-209,089.43

Finding the Fourth Proportional to 372,455.63, 513,989.18 and 209,089.43

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Solution

The fourth proportional to 372,455.63, 513,989.18 and 209,089.43 is: 288,543.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,455.63 : 513,989.18 = 209,089.43 : x
  2. Step 2: Convert to fraction form
    372,455.63/513,989.18 = 209,089.43/x
  3. Step 3: Cross multiply
    372,455.63x = 513,989.18 × 209,089.43
  4. Step 4: Simplify right side
    372,455.63x = 107,469,704,672.37
  5. Step 5: Solve for x
    x = 107,469,704,672.37/372,455.63
  6. Step 6: Final answer
    x = 288,543.64

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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.