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Finding the Fourth Proportional to 418,063, 627,198.66 and 122,575

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Solution

The fourth proportional to 418,063, 627,198.66 and 122,575 is: 183,893.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,063 : 627,198.66 = 122,575 : x
  2. Step 2: Convert to fraction form
    418,063/627,198.66 = 122,575/x
  3. Step 3: Cross multiply
    418,063x = 627,198.66 × 122,575
  4. Step 4: Simplify right side
    418,063x = 76,878,875,749.50
  5. Step 5: Solve for x
    x = 76,878,875,749.50/418,063
  6. Step 6: Final answer
    x = 183,893.04

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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.