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Finding the Fourth Proportional to 458,593.30, 687,889.03 and 121,667.72

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Solution

The fourth proportional to 458,593.30, 687,889.03 and 121,667.72 is: 182,501.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,593.30 : 687,889.03 = 121,667.72 : x
  2. Step 2: Convert to fraction form
    458,593.30/687,889.03 = 121,667.72/x
  3. Step 3: Cross multiply
    458,593.30x = 687,889.03 × 121,667.72
  4. Step 4: Simplify right side
    458,593.30x = 83,693,890,589.19
  5. Step 5: Solve for x
    x = 83,693,890,589.19/458,593.30
  6. Step 6: Final answer
    x = 182,501.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.