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Finding the Fourth Proportional to 202,904.20, 303,700.20 and 143,855.20

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Solution

The fourth proportional to 202,904.20, 303,700.20 and 143,855.20 is: 215,317.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,904.20 : 303,700.20 = 143,855.20 : x
  2. Step 2: Convert to fraction form
    202,904.20/303,700.20 = 143,855.20/x
  3. Step 3: Cross multiply
    202,904.20x = 303,700.20 × 143,855.20
  4. Step 4: Simplify right side
    202,904.20x = 43,688,853,011.04
  5. Step 5: Solve for x
    x = 43,688,853,011.04/202,904.20
  6. Step 6: Final answer
    x = 215,317.64

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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.