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Finding the Fourth Proportional to 458,449.62, 687,682.89 and 158,939.94

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Solution

The fourth proportional to 458,449.62, 687,682.89 and 158,939.94 is: 238,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,449.62 : 687,682.89 = 158,939.94 : x
  2. Step 2: Convert to fraction form
    458,449.62/687,682.89 = 158,939.94/x
  3. Step 3: Cross multiply
    458,449.62x = 687,682.89 × 158,939.94
  4. Step 4: Simplify right side
    458,449.62x = 109,300,277,275.63
  5. Step 5: Solve for x
    x = 109,300,277,275.63/458,449.62
  6. Step 6: Final answer
    x = 238,412.84

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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.