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Finding the Fourth Proportional to 458,467.98, 687,626.48 and 121,529.58

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Solution

The fourth proportional to 458,467.98, 687,626.48 and 121,529.58 is: 182,274.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,467.98 : 687,626.48 = 121,529.58 : x
  2. Step 2: Convert to fraction form
    458,467.98/687,626.48 = 121,529.58/x
  3. Step 3: Cross multiply
    458,467.98x = 687,626.48 × 121,529.58
  4. Step 4: Simplify right side
    458,467.98x = 83,566,957,311.28
  5. Step 5: Solve for x
    x = 83,566,957,311.28/458,467.98
  6. Step 6: Final answer
    x = 182,274.36

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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.