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Finding the Fourth Proportional to 407,329.09, 610,993.59 and 126,868.21

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Solution

The fourth proportional to 407,329.09, 610,993.59 and 126,868.21 is: 190,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,329.09 : 610,993.59 = 126,868.21 : x
  2. Step 2: Convert to fraction form
    407,329.09/610,993.59 = 126,868.21/x
  3. Step 3: Cross multiply
    407,329.09x = 610,993.59 × 126,868.21
  4. Step 4: Simplify right side
    407,329.09x = 77,515,663,084.77
  5. Step 5: Solve for x
    x = 77,515,663,084.77/407,329.09
  6. Step 6: Final answer
    x = 190,302.30

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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.