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Finding the Fourth Proportional to 200,673.40, 300,903.18 and 67,509.40

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Solution

The fourth proportional to 200,673.40, 300,903.18 and 67,509.40 is: 101,228.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,673.40 : 300,903.18 = 67,509.40 : x
  2. Step 2: Convert to fraction form
    200,673.40/300,903.18 = 67,509.40/x
  3. Step 3: Cross multiply
    200,673.40x = 300,903.18 × 67,509.40
  4. Step 4: Simplify right side
    200,673.40x = 20,313,793,139.89
  5. Step 5: Solve for x
    x = 20,313,793,139.89/200,673.40
  6. Step 6: Final answer
    x = 101,228.13

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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.