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Finding the Fourth Proportional to 200,210.88, 300,290.40 and 67,059.84

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Solution

The fourth proportional to 200,210.88, 300,290.40 and 67,059.84 is: 100,581.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,210.88 : 300,290.40 = 67,059.84 : x
  2. Step 2: Convert to fraction form
    200,210.88/300,290.40 = 67,059.84/x
  3. Step 3: Cross multiply
    200,210.88x = 300,290.40 × 67,059.84
  4. Step 4: Simplify right side
    200,210.88x = 20,137,426,177.54
  5. Step 5: Solve for x
    x = 20,137,426,177.54/200,210.88
  6. Step 6: Final answer
    x = 100,581.08

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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.