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Finding the Fourth Proportional to 371,282.48, 556,986.60 and 128,057.51

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Solution

The fourth proportional to 371,282.48, 556,986.60 and 128,057.51 is: 192,107.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,282.48 : 556,986.60 = 128,057.51 : x
  2. Step 2: Convert to fraction form
    371,282.48/556,986.60 = 128,057.51/x
  3. Step 3: Cross multiply
    371,282.48x = 556,986.60 × 128,057.51
  4. Step 4: Simplify right side
    371,282.48x = 71,326,317,662.53
  5. Step 5: Solve for x
    x = 71,326,317,662.53/371,282.48
  6. Step 6: Final answer
    x = 192,107.95

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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.