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Finding the Fourth Proportional to 372,241.49, 513,784.51 and 211,190.81

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Solution

The fourth proportional to 372,241.49, 513,784.51 and 211,190.81 is: 291,495.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,241.49 : 513,784.51 = 211,190.81 : x
  2. Step 2: Convert to fraction form
    372,241.49/513,784.51 = 211,190.81/x
  3. Step 3: Cross multiply
    372,241.49x = 513,784.51 × 211,190.81
  4. Step 4: Simplify right side
    372,241.49x = 108,506,563,735.45
  5. Step 5: Solve for x
    x = 108,506,563,735.45/372,241.49
  6. Step 6: Final answer
    x = 291,495.09

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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.