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Finding the Fourth Proportional to 300,329.13, 450,493.70 and 138,206.82

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Solution

The fourth proportional to 300,329.13, 450,493.70 and 138,206.82 is: 207,310.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,329.13 : 450,493.70 = 138,206.82 : x
  2. Step 2: Convert to fraction form
    300,329.13/450,493.70 = 138,206.82/x
  3. Step 3: Cross multiply
    300,329.13x = 450,493.70 × 138,206.82
  4. Step 4: Simplify right side
    300,329.13x = 62,261,301,707.03
  5. Step 5: Solve for x
    x = 62,261,301,707.03/300,329.13
  6. Step 6: Final answer
    x = 207,310.23

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1.5x scale

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.