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Finding the Fourth Proportional to 371,493.90, 512,667.54 and 210,344.64

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Solution

The fourth proportional to 371,493.90, 512,667.54 and 210,344.64 is: 290,278.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,493.90 : 512,667.54 = 210,344.64 : x
  2. Step 2: Convert to fraction form
    371,493.90/512,667.54 = 210,344.64/x
  3. Step 3: Cross multiply
    371,493.90x = 512,667.54 × 210,344.64
  4. Step 4: Simplify right side
    371,493.90x = 107,836,869,140.99
  5. Step 5: Solve for x
    x = 107,836,869,140.99/371,493.90
  6. Step 6: Final answer
    x = 290,278.98

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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.