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Finding the Fourth Proportional to 372,336.56, 513,802.72 and 208,977.88

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Solution

The fourth proportional to 372,336.56, 513,802.72 and 208,977.88 is: 288,377.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,336.56 : 513,802.72 = 208,977.88 : x
  2. Step 2: Convert to fraction form
    372,336.56/513,802.72 = 208,977.88/x
  3. Step 3: Cross multiply
    372,336.56x = 513,802.72 × 208,977.88
  4. Step 4: Simplify right side
    372,336.56x = 107,373,403,163.83
  5. Step 5: Solve for x
    x = 107,373,403,163.83/372,336.56
  6. Step 6: Final answer
    x = 288,377.28

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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.