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Finding the Fourth Proportional to 200,501.60, 300,728.97 and 80,553.69

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Solution

The fourth proportional to 200,501.60, 300,728.97 and 80,553.69 is: 120,821.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,501.60 : 300,728.97 = 80,553.69 : x
  2. Step 2: Convert to fraction form
    200,501.60/300,728.97 = 80,553.69/x
  3. Step 3: Cross multiply
    200,501.60x = 300,728.97 × 80,553.69
  4. Step 4: Simplify right side
    200,501.60x = 24,224,828,223.40
  5. Step 5: Solve for x
    x = 24,224,828,223.40/200,501.60
  6. Step 6: Final answer
    x = 120,821.12

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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.