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Finding the Fourth Proportional to 335,712.80, 503,569.20 and 136,039.70

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Solution

The fourth proportional to 335,712.80, 503,569.20 and 136,039.70 is: 204,059.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,712.80 : 503,569.20 = 136,039.70 : x
  2. Step 2: Convert to fraction form
    335,712.80/503,569.20 = 136,039.70/x
  3. Step 3: Cross multiply
    335,712.80x = 503,569.20 × 136,039.70
  4. Step 4: Simplify right side
    335,712.80x = 68,505,402,897.24
  5. Step 5: Solve for x
    x = 68,505,402,897.24/335,712.80
  6. Step 6: Final answer
    x = 204,059.55

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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.