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Finding the Fourth Proportional to 521,168.69, 719,224.97 and 291,720.27

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Solution

The fourth proportional to 521,168.69, 719,224.97 and 291,720.27 is: 402,580.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,168.69 : 719,224.97 = 291,720.27 : x
  2. Step 2: Convert to fraction form
    521,168.69/719,224.97 = 291,720.27/x
  3. Step 3: Cross multiply
    521,168.69x = 719,224.97 × 291,720.27
  4. Step 4: Simplify right side
    521,168.69x = 209,812,501,272.92
  5. Step 5: Solve for x
    x = 209,812,501,272.92/521,168.69
  6. Step 6: Final answer
    x = 402,580.79

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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.