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Finding the Fourth Proportional to 288,986.70, 433,480.05 and 200,340.30

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Solution

The fourth proportional to 288,986.70, 433,480.05 and 200,340.30 is: 300,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,986.70 : 433,480.05 = 200,340.30 : x
  2. Step 2: Convert to fraction form
    288,986.70/433,480.05 = 200,340.30/x
  3. Step 3: Cross multiply
    288,986.70x = 433,480.05 × 200,340.30
  4. Step 4: Simplify right side
    288,986.70x = 86,843,523,261.02
  5. Step 5: Solve for x
    x = 86,843,523,261.02/288,986.70
  6. Step 6: Final answer
    x = 300,510.45

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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.