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Finding the Fourth Proportional to 335,133.78, 502,542.71 and 121,751.20

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Solution

The fourth proportional to 335,133.78, 502,542.71 and 121,751.20 is: 182,569.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,133.78 : 502,542.71 = 121,751.20 : x
  2. Step 2: Convert to fraction form
    335,133.78/502,542.71 = 121,751.20/x
  3. Step 3: Cross multiply
    335,133.78x = 502,542.71 × 121,751.20
  4. Step 4: Simplify right side
    335,133.78x = 61,185,177,993.75
  5. Step 5: Solve for x
    x = 61,185,177,993.75/335,133.78
  6. Step 6: Final answer
    x = 182,569.41

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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.