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Finding the Fourth Proportional to 288,959.20, 433,438.80 and 200,312.80

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Solution

The fourth proportional to 288,959.20, 433,438.80 and 200,312.80 is: 300,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,959.20 : 433,438.80 = 200,312.80 : x
  2. Step 2: Convert to fraction form
    288,959.20/433,438.80 = 200,312.80/x
  3. Step 3: Cross multiply
    288,959.20x = 433,438.80 × 200,312.80
  4. Step 4: Simplify right side
    288,959.20x = 86,823,339,656.64
  5. Step 5: Solve for x
    x = 86,823,339,656.64/288,959.20
  6. Step 6: Final answer
    x = 300,469.20

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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.