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Finding the Fourth Proportional to 501,419.58, 691,955 and 271,976.28

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Solution

The fourth proportional to 501,419.58, 691,955 and 271,976.28 is: 375,325.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,419.58 : 691,955 = 271,976.28 : x
  2. Step 2: Convert to fraction form
    501,419.58/691,955 = 271,976.28/x
  3. Step 3: Cross multiply
    501,419.58x = 691,955 × 271,976.28
  4. Step 4: Simplify right side
    501,419.58x = 188,195,346,827.40
  5. Step 5: Solve for x
    x = 188,195,346,827.40/501,419.58
  6. Step 6: Final answer
    x = 375,325.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.