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Finding the Fourth Proportional to 521,229.88, 719,257.49 and 291,734.60

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Solution

The fourth proportional to 521,229.88, 719,257.49 and 291,734.60 is: 402,571.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,229.88 : 719,257.49 = 291,734.60 : x
  2. Step 2: Convert to fraction form
    521,229.88/719,257.49 = 291,734.60/x
  3. Step 3: Cross multiply
    521,229.88x = 719,257.49 × 291,734.60
  4. Step 4: Simplify right side
    521,229.88x = 209,832,298,669.63
  5. Step 5: Solve for x
    x = 209,832,298,669.63/521,229.88
  6. Step 6: Final answer
    x = 402,571.51

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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.