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Finding the Fourth Proportional to 404,839.87, 606,595.14 and 138,455.05

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Solution

The fourth proportional to 404,839.87, 606,595.14 and 138,455.05 is: 207,455.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,839.87 : 606,595.14 = 138,455.05 : x
  2. Step 2: Convert to fraction form
    404,839.87/606,595.14 = 138,455.05/x
  3. Step 3: Cross multiply
    404,839.87x = 606,595.14 × 138,455.05
  4. Step 4: Simplify right side
    404,839.87x = 83,986,160,438.46
  5. Step 5: Solve for x
    x = 83,986,160,438.46/404,839.87
  6. Step 6: Final answer
    x = 207,455.26

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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.