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Finding the Fourth Proportional to 521,549.28, 719,655.75 and 303,793.79

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Solution

The fourth proportional to 521,549.28, 719,655.75 and 303,793.79 is: 419,187.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,549.28 : 719,655.75 = 303,793.79 : x
  2. Step 2: Convert to fraction form
    521,549.28/719,655.75 = 303,793.79/x
  3. Step 3: Cross multiply
    521,549.28x = 719,655.75 × 303,793.79
  4. Step 4: Simplify right side
    521,549.28x = 218,626,944,189.51
  5. Step 5: Solve for x
    x = 218,626,944,189.51/521,549.28
  6. Step 6: Final answer
    x = 419,187.51

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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.