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Finding the Fourth Proportional to 418,008.27, 627,009.06 and 248,405.40

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Solution

The fourth proportional to 418,008.27, 627,009.06 and 248,405.40 is: 372,606.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,008.27 : 627,009.06 = 248,405.40 : x
  2. Step 2: Convert to fraction form
    418,008.27/627,009.06 = 248,405.40/x
  3. Step 3: Cross multiply
    418,008.27x = 627,009.06 × 248,405.40
  4. Step 4: Simplify right side
    418,008.27x = 155,752,436,352.92
  5. Step 5: Solve for x
    x = 155,752,436,352.92/418,008.27
  6. Step 6: Final answer
    x = 372,606.11

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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.