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Finding the Fourth Proportional to 335,138.40, 502,610.40 and 121,881.60

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Solution

The fourth proportional to 335,138.40, 502,610.40 and 121,881.60 is: 182,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,138.40 : 502,610.40 = 121,881.60 : x
  2. Step 2: Convert to fraction form
    335,138.40/502,610.40 = 121,881.60/x
  3. Step 3: Cross multiply
    335,138.40x = 502,610.40 × 121,881.60
  4. Step 4: Simplify right side
    335,138.40x = 61,258,959,728.64
  5. Step 5: Solve for x
    x = 61,258,959,728.64/335,138.40
  6. Step 6: Final answer
    x = 182,787.05

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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.