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Finding the Fourth Proportional to 200,427.16, 300,643.93 and 67,308.57

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Solution

The fourth proportional to 200,427.16, 300,643.93 and 67,308.57 is: 100,963.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,427.16 : 300,643.93 = 67,308.57 : x
  2. Step 2: Convert to fraction form
    200,427.16/300,643.93 = 67,308.57/x
  3. Step 3: Cross multiply
    200,427.16x = 300,643.93 × 67,308.57
  4. Step 4: Simplify right side
    200,427.16x = 20,235,912,902.31
  5. Step 5: Solve for x
    x = 20,235,912,902.31/200,427.16
  6. Step 6: Final answer
    x = 100,963.93

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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.