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Finding the Fourth Proportional to 458,781.21, 633,187.05 and 330,145.52

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Solution

The fourth proportional to 458,781.21, 633,187.05 and 330,145.52 is: 455,650.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,781.21 : 633,187.05 = 330,145.52 : x
  2. Step 2: Convert to fraction form
    458,781.21/633,187.05 = 330,145.52/x
  3. Step 3: Cross multiply
    458,781.21x = 633,187.05 × 330,145.52
  4. Step 4: Simplify right side
    458,781.21x = 209,043,864,713.58
  5. Step 5: Solve for x
    x = 209,043,864,713.58/458,781.21
  6. Step 6: Final answer
    x = 455,650.45

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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.