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Finding the Fourth Proportional to 418,279.86, 627,325.56 and 118,754.28

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Solution

The fourth proportional to 418,279.86, 627,325.56 and 118,754.28 is: 178,104.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,279.86 : 627,325.56 = 118,754.28 : x
  2. Step 2: Convert to fraction form
    418,279.86/627,325.56 = 118,754.28/x
  3. Step 3: Cross multiply
    418,279.86x = 627,325.56 × 118,754.28
  4. Step 4: Simplify right side
    418,279.86x = 74,497,595,203.40
  5. Step 5: Solve for x
    x = 74,497,595,203.40/418,279.86
  6. Step 6: Final answer
    x = 178,104.67

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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.