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Finding the Fourth Proportional to 339,990.51, 509,980.01 and 118,368.75

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Solution

The fourth proportional to 339,990.51, 509,980.01 and 118,368.75 is: 177,551.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,990.51 : 509,980.01 = 118,368.75 : x
  2. Step 2: Convert to fraction form
    339,990.51/509,980.01 = 118,368.75/x
  3. Step 3: Cross multiply
    339,990.51x = 509,980.01 × 118,368.75
  4. Step 4: Simplify right side
    339,990.51x = 60,365,695,716.84
  5. Step 5: Solve for x
    x = 60,365,695,716.84/339,990.51
  6. Step 6: Final answer
    x = 177,551.12

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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.