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Finding the Fourth Proportional to 418,962.33, 627,650.59 and 247,671.21

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Solution

The fourth proportional to 418,962.33, 627,650.59 and 247,671.21 is: 371,038.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,962.33 : 627,650.59 = 247,671.21 : x
  2. Step 2: Convert to fraction form
    418,962.33/627,650.59 = 247,671.21/x
  3. Step 3: Cross multiply
    418,962.33x = 627,650.59 × 247,671.21
  4. Step 4: Simplify right side
    418,962.33x = 155,450,982,651.64
  5. Step 5: Solve for x
    x = 155,450,982,651.64/418,962.33
  6. Step 6: Final answer
    x = 371,038.09

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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.