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Finding the Fourth Proportional to 336,991.71, 505,486.62 and 137,265.15

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Solution

The fourth proportional to 336,991.71, 505,486.62 and 137,265.15 is: 205,897.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,991.71 : 505,486.62 = 137,265.15 : x
  2. Step 2: Convert to fraction form
    336,991.71/505,486.62 = 137,265.15/x
  3. Step 3: Cross multiply
    336,991.71x = 505,486.62 × 137,265.15
  4. Step 4: Simplify right side
    336,991.71x = 69,385,696,717.29
  5. Step 5: Solve for x
    x = 69,385,696,717.29/336,991.71
  6. Step 6: Final answer
    x = 205,897.34

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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.