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Finding the Fourth Proportional to 372,119.84, 513,568.72 and 208,821.36

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Solution

The fourth proportional to 372,119.84, 513,568.72 and 208,821.36 is: 288,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,119.84 : 513,568.72 = 208,821.36 : x
  2. Step 2: Convert to fraction form
    372,119.84/513,568.72 = 208,821.36/x
  3. Step 3: Cross multiply
    372,119.84x = 513,568.72 × 208,821.36
  4. Step 4: Simplify right side
    372,119.84x = 107,244,118,563.86
  5. Step 5: Solve for x
    x = 107,244,118,563.86/372,119.84
  6. Step 6: Final answer
    x = 288,197.80

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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.