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Finding the Fourth Proportional to 200,331.40, 300,059.70 and 121,307.80

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Solution

The fourth proportional to 200,331.40, 300,059.70 and 121,307.80 is: 181,696.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,331.40 : 300,059.70 = 121,307.80 : x
  2. Step 2: Convert to fraction form
    200,331.40/300,059.70 = 121,307.80/x
  3. Step 3: Cross multiply
    200,331.40x = 300,059.70 × 121,307.80
  4. Step 4: Simplify right side
    200,331.40x = 36,399,582,075.66
  5. Step 5: Solve for x
    x = 36,399,582,075.66/200,331.40
  6. Step 6: Final answer
    x = 181,696.84

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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.