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Finding the Fourth Proportional to 418,929.44, 627,601.30 and 247,638.34

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Solution

The fourth proportional to 418,929.44, 627,601.30 and 247,638.34 is: 370,988.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,929.44 : 627,601.30 = 247,638.34 : x
  2. Step 2: Convert to fraction form
    418,929.44/627,601.30 = 247,638.34/x
  3. Step 3: Cross multiply
    418,929.44x = 627,601.30 × 247,638.34
  4. Step 4: Simplify right side
    418,929.44x = 155,418,141,925.74
  5. Step 5: Solve for x
    x = 155,418,141,925.74/418,929.44
  6. Step 6: Final answer
    x = 370,988.83

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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.