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Finding the Fourth Proportional to 437,123.40, 655,490.70 and 200,538.60

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Solution

The fourth proportional to 437,123.40, 655,490.70 and 200,538.60 is: 300,718.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,123.40 : 655,490.70 = 200,538.60 : x
  2. Step 2: Convert to fraction form
    437,123.40/655,490.70 = 200,538.60/x
  3. Step 3: Cross multiply
    437,123.40x = 655,490.70 × 200,538.60
  4. Step 4: Simplify right side
    437,123.40x = 131,451,187,291.02
  5. Step 5: Solve for x
    x = 131,451,187,291.02/437,123.40
  6. Step 6: Final answer
    x = 300,718.72

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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.