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Finding the Fourth Proportional to 200,412.69, 300,646.71 and 67,331.01

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Solution

The fourth proportional to 200,412.69, 300,646.71 and 67,331.01 is: 101,005.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,412.69 : 300,646.71 = 67,331.01 : x
  2. Step 2: Convert to fraction form
    200,412.69/300,646.71 = 67,331.01/x
  3. Step 3: Cross multiply
    200,412.69x = 300,646.71 × 67,331.01
  4. Step 4: Simplify right side
    200,412.69x = 20,242,845,762.54
  5. Step 5: Solve for x
    x = 20,242,845,762.54/200,412.69
  6. Step 6: Final answer
    x = 101,005.81

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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.